|This article is about a/an rider in Kamen Rider Decade.|
|Kamen Rider Decade|
|Series:||Kamen Rider Decade|
|Rider Type:||Hero (Current)|
Villain (Past before the Series, For a Moment in All Riders vs Dai-Shocker, Violent Emotion In MW2010, Undercover Hero in Kamen Rider X Super Sentai - Super Hero Taisen, Formerly)
|Homeworld:||Earth (Decade World)|
|First Appearance:||Rider War|
|Last Appearance:||Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z|
|Number of Episode|
|31 (Decade) |
|Actor:|| Masahiro Inoue|
Riku Ichikawa (Young Tsukasa)
|Kamen Rider Decade|
- "I'm just a passing-through Kamen Rider. Remember that!"
- ―Tsukasa's answer when asked who he is[src]
Kamen Rider Decade (仮面ライダーディケイド Kamen Raidā Dikeido?, Lit. Masked Rider Decade) is the main protagonist and eponymous character of the Kamen Rider Series Kamen Rider Decade. Decade's name is taken from the English word decade as Decade is the 10th of the Heisei run of the Kamen Rider Series, evidenced by the Roman numeral X (ten) on his chest. His logo features the numbers 453 and 145 below the bar code. These digits correlate to the English letters A, C, D, and E to form the word "DECADE". He is also the first Rider to have a series that crosses over with a Super Sentai TV show, in this case Samurai Sentai Shinkenger, though the honor of being the first Rider to appear in a crossover belongs to his rival Kamen Rider Diend.
Tsukasa Kadoya (門矢 士 Kadoya Tsukasa?) is a hypocritical and self-righteous young man who does not know much about his past. He has a strong desire to "catch the world" using his photos, but they never develop well. He sees this as a sign that he is not of this world, unaware of it being a prelude of it being supplanted by the worlds of the other nine Kamen Riders. However as Decade, he is seen as an agent of destruction, usually being called "the devil", a rumor spread by Narutaki, who believes Tsukasa does not belong in any world.
It is also revealed that those who appear in his badly developed photographs die or foreshadow events. As Tsukasa travels between dimensions, his clothing changes to suit the Rider's World, including some accouterments similar in color to his camera and Decade. He also exhibits some prior knowledge or a talent necessary to his quest in the Rider's Worlds he enters. Some examples are his knowledge of the Grongi language in Kuuga's World and his enrollment as a student in Faiz's World. He has also mentioned before that he is capable of doing anything except for taking photos.
Before a climatic battle begins, Tsukasa answers a major villain's demand for his identity by saying that he is "Just a passing Kamen Rider, remember that!" (通り過がりの仮面ライダーだ、覚えておけ！ Tōrisugari no Kamen Raidā da, oboeteoke!).
Tsukasa uses a "Decade Pink" Blackbird, fly 135 Twin Lens Reflex Camera.
When Tsukasa is confronted by Natsumi over the photos he has taken, the two get separated by a dimensional barrier that sends Natsumi into an unstable pocket dimension where she flees for her life from various monsters before finding the Decadriver from her dreams. While looking for her, Tsukasa encounters Wataru Kurenai, who calls him "Decade". Wataru tells him today is the day his world will end, and that he is needed to protect it.
After finding Natsumi, Tsukasa uses the Kamen Ride Cards to assume the forms of Kabuto, Faiz and Hibiki to deal with groups of Worm, Orphnoch, and Makamou. Confused by both his actions and the cards' powers' fading, Tsukasa takes Natsumi and returns to their world as it is being destroyed by the various monsters. When time suddenly freezes, Wataru appears, revealing the status of the worlds and assigning Tsukasa the task of traveling into the other worlds to stop the dimensional chaos inflicted on his own world by meeting the Riders of each of the other dimensions.
Starting in the World of Kuuga as a police officer, Tsukasa meets the world's Rider, Yuusuke Onodera who battles the Grongi and learns that that someone is disseminating rumors across the Worlds about him as a destroyer of worlds. After reconciling with Yuusuke, the two stop the Grongi N-Gamio-Zeda from taking over the world.
At the World of Kiva as a violinist, Tsukasa encounters the young boy Wataru, helping the boy realize his role as King of the Fangire Race to maintain the peaceful coexistence of the human and Fangire races while defeating the Beetle Fangire: Wataru's father and the former King.
Then at the World of Ryuki, Tsukasa defends the framed Natsumi in a murder case and solves it with the aid of Shinji Tatsumi. The true villain, Kamata is revealed to have been an Undead all along and is taken by Narutaki to the World of Blade after his defeat.
Assuming the role of chief waiter under the BOARD Corporation while being promoted repeatedly, Tsukasa works with Kazuma Kendate to uncover the conspiracy between Kamata and BOARD's CEO, Kamen Rider Chalice, to take over the world through the Joker card which the latter used on himself. After he and Blade work together to defeat the Undead, Tsukasa takes his leave as Kazuma thanks him.
In the World of Faiz as a student of the Smart Brain High School, Tsukasa crosses paths with a man he saw at the World of Blade who knows him, Daiki Kaito. Though Kaito warns him to stay out of his affairs, Tsukasa finds Faiz after confronting the Lucky Clover group, learning that he is Takumi Ogami as he attempts to keep his Faiz Belt away from Kaito. Tsukasa later resolves the tension between Takumi and Yuri Tomoda over Takumi's identity, giving Takumi the will to continue protecting the school.
Arriving in the World of Agito as a postman, Tsukasa reads a discard letter meant for Shouichi Ashikawa, making it his goal to protect Ashikawa from the Unknown for the sake of Toko Yashiro, the writer of the letter. With Yuusuke's help, Tsukasa succeeds in having Shouichi achieve the necessary state of mind needed to complete his evolution to Agito before reuniting him with Yashiro.
Upon arriving in the World of Den-O, Tsukasa becomes Den-O under the possession of an Imagin, before forcing him into Yuusuke's body. Here, he learns that some unknown force is changing the past as he is fought by the other Taros possessing Natsumi's body who believe Decade to be the source. Learning the Imagin possessing Yuusuke is named Momotaros, Tsukasa finds him and helps him regain his physical form as they defeat the Alligator Imagin. Believing their adventures with Den-O to be over, only to learn the identity of the true culprits for Den-O World's time distortions, they prepare to travel to the World of Kabuto until the Swan Imagin Sieg comes into the Hikari Studio with a manuscript showing a battle at Onigashima. With Sieg's help, Tsukasa and company travel with the DenLiner crew back in time to fight the Oni Rider Brothers before returning to the present time in the World of Kabuto.
In the role of a ZECTrooper, after witnessing TheBee and Gattack's fight against a Worm, Tsukasa brings Arata to the Photo Studio where he finds a Salis Worm that had mimicked him. After the impostor is exposed, the Worm is killed by Kabuto when it attempted to kill a girl named Mayu whose brother was believed to have been killed by Kabuto. Although it seemed that TheBee's user, Sou Otogiri, is her brother, Tsukasa felt something was not right. After learning that Mayu herself is a Worm, both his meeting with Grandma and learning the full nature of the Kabuto Capture Plan allow him to get the full story. Arriving to Mayu's aid, Tsukasa helps Kabuto, Mayu's real brother Souji, in defeating Otogiri in his true identity, the Phylloxera Worm.
After bringing Mayu back to her Grandma and giving Daiki a vial of pepper as a "treasure", Tsukasa begins the journey into the final world, the World of Hibiki. Here, Tsukasa meets a encounters an Oni in training named Asumu. From there, believed Great Master of Ongekidō style , Tsukasa meets the three masters of the Ongekidō Styles before being pulled into a ploy by Daiki to rob the two Oni masters Ibuki and Zanki, worsening when they are attacked by the Makamou Gyuki until Akira and Todoroki drive the beast off. Supporting their intent to end the rivalry among their schools, Tsukasa convinces Ibuki and Zanki to pass the torch. Tsukasa later offers his aid to Asumu after he became the new Hibiki thanks to Daiki, whom he still acknowledged as a thief and nothing more.
With the journey over, Tsukasa and the others of the Hikari Studio return to what appears to be Natsumi's world to find it back to normal as if it was not plagued by the monsters. Despite being in a perfect world that he has earned, according to Otoya Kurenai, it is revealed that it is only a parallel version of their own world where the monsters have taken over and killed all but a few humans.
After being tested by Otoya, Tsukasa gains the K-Touch after turning down Otoya's offer to live in a world of lies, using Decade's Complete Form to take out the Dark Riders. Knowing that their journey is not really over, the Hikari Studio group heads to the next world, Kaito's homeworld. Arriving in the World of Diend, he finds himself in the role of a salaryman selling products to the society until he encounters Shin and Haruka, Kamen Riders Lance and Larc, fighting a Darkroach.
He learns that Daiki is the lackey of the evil Fourteen who brainwashed the inhabitants of the World of Diend to believe that Kamen Riders are evil, having unknowingly given up his brother to Fourteen. He and Daiki team up to defeat Fourteen to free all those who have been brainwashed, leaving only Daiki's brother Junichi, Kamen Rider Glaive, who was not brainwashed but accepting of Fourteen's peaceful world. He teaches the two brothers that they have to protect each other, no matter what, before heading off to the next world, one which he has no knowledge of at all.
In the guise of a kuroko with a strange card in hand, Tsukasa learns that his lack of knowledge is due to the world not having any Kamen Riders as he witnesses the Shinkengers drive off the Nanashi. Curious about them, Tsukasa uses his guise to learn more about them and their world before fighting the Ayakashi Chinomanako who has stolen the Diendriver from Daiki. He realizes that the monster is the reason why he is in this world as Chinomanako escapes and becomes the world's first Kamen Rider. He attempts to fight the Chinomanako but is stopped by Narutaki saying that his actions will only bring doom to the world. After being given the advice to do the right thing by Hikoma Kusakabe, Decade later helps the Shinkengers with the card revealing to be the Rekka Daizantou which he uses to destroy Chinomanako alongside ShinkenRed using the Blade Blade.
He leaves this world and enters Kamen Rider BLACK RX's receiving another card being mistaken as Joe the Haze when he changes clothes and is attacked by Schwarian and his Chap minions while meeting Kotaro Minami himself. Decade then finds out that Dai-Shocker is in this world planning to conquer it. Decade teams with RX to help fend off the assault on this world. Eventually the Security Chief of Dai-Shocker, Apollo Geist drains Natsumi's life through his Perfector ending up in a hospital and Tsukasa desperate to revive her. Decade learns of Apollo Geist and the Perfector from Kaitoh and goes off to find him, but Kaitoh also has his agenda of retrieving the device. Decade, with assistance from RX, battles Geist but Guy leaves through a dimension wall. Tsukasa follows him in pursuit but ends up in Kamen Rider BLACK's World with no way out.
BLACK attacks Decade after he mistakes him for RX's Kotaro Minami. Decade refuses to fight and Diend appears to stop BLACK with Femme's power. They retreat and Decade continues his search for Guy. As Ryuki he fights him and saves a child, gaining BLACK's trust in the process and teaming up with him. They come across Geist and the newly recruited Schwarian, although Guy escapes through dimensional wall BLACK uses "King Stone Flash" to help Tsukasa get back to RX's world through the wall. Decade re-encounters the RX Kotaro and finds Guy. His card is revealed to be a Kamen Rider BLACK card but Diend uses it instead and the two Kotaros transform and fight Geist and Schwarian. Decade is able to get the Perfector but Diend steals it and runs away. Decade then destroys Schwarian with Agito's powers while the two BLACKs force Geist into retreating.
At the hospital Kaitoh hands over the Perfector to saying that there are other treasures that he has already taken from this world and there are always more to get from other worlds. Kaitoh takes his leave saying to Tsukasa to save his friend. Decade uses the Perfector to drain part of his life and implant it into Natsumi reviving her. Before leaving, Tsukasa tells Kotaro that Joe the Haze is helping his counterpart. But Kotaro is not saddened by it, knowing that Joe will be with him in spirit. The gang returns to the photo shop where the next world is waiting which is Amazon's World. When Tsukasa enters Amazon's world he immediately assumes the mantle of a baseball player and receives yet another card. He immediately sees that Dai-Shocker has taken over this world and is attacked by some of the monsters from different worlds. Amazon appears suddenly and helps Decade fight them but before a finishing blow could be done the people intervened convinced by Dai-Shocker that riders are destroyers forcing them to retreat.
They run into Kaitoh again where he explains his plan to steal Amazon's GiGi armlet's counterpart, the GaGa armlet which is unfortunately owned by the Ten-Faced Demon Llumu Qhimil, Dai-Shocker's designated ruler of the World of Amazon. Llumu sends out Masahiko Okamura to reveal the Rider's location by faking an attack by the Dai-Shocker foot soldiers and gaining their trust. Apollo Geist appears once more fighting Decade demanding his Perfector but Decade destroys it instead. The fight goes on until Masahiko steals the GiGi armlet after Dai-Shocker turns on him.
With Dai-Shocker now aware of where the Riders might go the gang goes to a nurse's office at Shocker School where Tsukasa finds a picture of Masahiko and his family before his father passed away. They are then driven off by Masahiko's older sister and the Dai-Shocker foot soldiers. They quickly come up with a plan to retrieve the GiGi armlet after Masahiko turned it over to them and was put up to be the first in the Humanity-to-Monster Project. He is saved by Tsukasa and Yuusuke in disguise as foot soldiers and explains what happened. As they go out and retrieve the GiGi Armlet Amazon joins the fight against Llumu Qhimil, while Diend successfully obtains the GaGa Armlet during the battle. However this is short-lived as Tsukasa uses the armlet for himself through the use of his new card until giving to Amazon who delivers the final blow to Llumu with Super Big Slice. Amazon is then adopted into Masahiko's family and the gang returns to the photo shop to find Diend sitting there and he proposes that he go with them.
They accept and head into the next world which will be the site where all the riders are supposed to be; "The Rider War World". It is the same place that Natsumi saw when she had her dream about the war. In an unspecified time before the World of the Rider War the Hikari Family Studio ends up in the World of Dai-Shocker where Tsukasa meets his sister Sayo Kadoya and starts a tournament to find the strongest Rider to save the world after hearing he must be the one to do so by Nobuhiko Tsukikage, Sayo's butler.
Tsukasa wins but the victory is short lived as Nobuhiko is revealed to be Shadow Moon and Sayo as Priestess Bishium takes control of Yuusuke through the Stone of Earth to attack Tsukasa as part of revenge for abandoning her, despite not knowing the truth. Tsukasa is left alone as even his friends abandoned him. He is later encountered by Joji Yuki a former scientist for Dai-Shocker that wanted payback by Tsukasa for doing said punishment to him. Later he realizes that Tsukasa is no longer affiliated with Dai-Shocker and fights Dai-Shocker as Riderman as Tsukasa moves away.
Tsukasa joins in the fight against Dai-Shocker starting with the fight against General Jark. He and all of the Kamen Riders from the Showa and Heisei Era Fight Dai-Shocker destroying Ambassador Hell and Doctor Shinigami as Garagaranda and Ikadevil respectively. Later Decade fights the Bishium-controlled Kuuga Rising Ultimate but realizing he's talking with his sister, he convinces Sayo that Nobuhiko is only using her to further his goals. Sayo, knowing the error of her ways destroys the Stone of Earth, freeing Yuusuke. With the stone destroyed Shadow Moon fights Decade and Kuuga Rising Ultimate overpowering them until Double shows up and flings him to Dai-Shocker's castle. Tsukasa along with all of the other riders destroy Shadow Moon with the All Rider Kick. After Shadow Moon and the castle is destroyed, King Dark appears. Diend summons J and uses the Decade Final Form Ride to turn Decade into the Jumbo Decadriver and turns J into Decade Complete Jumbo Formation destroying King Dark. Tsukasa later makes amends with Sayo and leaves with the Hikari Studio.
The War World is Decade's undoing as he witnesses both Kamen Riders Blade and Kiva lead Rider armies against each other. Tsukasa and Yuusuke try to keep both sides from killing each other and finding out the Fangire Queen, Yuki, marries Guy and becomes Super Apollo Geist. With this new enemy Tsukasa destroys Yuki with Ryuki Survive's abilities and the rest of the Fangire and Undead armies with help from Kazuma Kendate and Wataru. Unfortunately Super Apollo Geist uses his powers to make the worlds merge with Kazuma and Garren disappearing and Geist kidnaps Natsumi. He is then confronted by Kazuma Kenzaki, the original Kamen Rider Blade. Decade finally finds out why the worlds are merging and it is because of Decade himself. Kenzaki tranforms and assumes King Form, Decade is quickly defeated. Decade returns to the photo studio injured and finds out that every picture he took in the other worlds are completely blank because they are nearly gone. Decade heads out to follow Kivala and is confronted by Hibiki and Kiva who fight him. The two Riders were talked into helping Kenzaki save their own worlds. Kuuga saves Decade while he deals with Geist.
Decade catches up to Geist who has brought back all the different monsters he fought in the different worlds. Decade is quickly overwhelmed by too many enemies but with Kuuga, Hibiki, Kiva, and Diend he manages to drive the creatures back. Decade immediately fights Geist who has become very powerful with his super mode. Diend hands Decade his Kamen Ride Card and with the power of Diend two bursts annihilates Geist. Decade is exhausted and collapses with Kiva and Hibiki finally fading away because their worlds no longer exist. Decade is taken to the place where it all started the place where he met the original Wataru. Wataru explains that Tsukasa messed up his job and says that he and the others will fight him as he transforms into Kiva. Decade is again transported to the War world where the original Riders appear and Kuuga becoming Ultimate Form to fight Decade due to Kivala. Diend aims his gun directly at Decade's head at point blank range. With that the Rider War begins.
Movie War 2010
In Decade: Final Chapter, Tsukasa accepts his role as the Destroyer of Worlds and turns into Violent Emotion Decade destroying many Riders and turning them into cards. He is assisted by Yuriko Misaki who reminds Tsukasa of Sayo and can transform into Electro-Wave Human Tackle. He is confronted by Natsumi who has become Kamen Rider Kivala to stop his rampage. Before Tsukasa disappears after he voluntarily lets her destroy him, he gives Natsumi the Kamen Ride Cards and tells her that as long as people remember the Riders they will never disappear.
Natsumi and Kaitoh learn from Wataru Kurenai of Decade's role as the destroyer and connector of worlds, as Tsukasa would destroy the Riders he would connect the other worlds preventing their collapse and does anything he is needed for as a hero or a villain to finish the Rider's story. He himself however has no story and with his task complete Decade was gone forever. Despite this Natsumi finds a way to revive him through the use of a picture and the A.R. Riders' memories and Tsukasa is resurrected. Tsukasa and the gang along with other Riders fight against Super Shocker receiving more help from Kamen Rider Double who appear to know each other. With Double's Final Form Ride and Final Attack Decade destroys Super Shocker's most powerful and evil kaijin, Ultimate-D.
He is last seen with his friends posing for a picture after the battle while continuing his adventures across the A.R. Worlds.
Let's Go Kamen Riders
A mishap caused by the Greeed Ankh unintentionally altered the timeline which enabled Shocker to utilize the Core Medal to create the Shocker Greeed which defeated the Double Riders and seemingly erased the legacy of the Kamen Riders from history. In 2011, after Kamen Rider New Den-O's attempt to repair the damage, he along with Kamen Rider OOO and M-Ankh awaited execution. However, it was revealed the Double Riders had their brainwashing removed by a Shocker scientist.
The Double Riders joined with New Den-O and OOO to fight Shocker's forces, but were eventually defeated. When the order was given to kill everyone, V3 suddenly appeared, asserting that there were more than four riders. V3 was soon followed by all the other revived riders that came after him, as even though Rider history was changed, the people's memories haven't changed. Decade appeared after the three 90s riders and the first eight Heisei riders, fighting against Shadow Moon.
After the riders were united, they faced off against Shocker's Great Leader. Later, when joined by a force of extra riders, Decade and all the other riders got on their motorcycles and performed the "All Rider Break", ramming into the Rock Great Leader and defeating it once and for all.
Kamen Rider x Super Sentai: Super Hero Taisen
- "Destroy all Super Sentai... or die trying!"
- ―his words as the leader of Dai-Shocker[src]
Doktor G ressurected and gathered all defeated Rider villains, recreating Dai-Shocker. He told Tsukasa that the Riders and monsters needed to destroy the Super Sentai to ensure the survival of the Riders, and, answering that, Tsukasa took control of the new Dai-Shocker, becoming its Great Leader again to battle the Super Sentai and also the Dai-Zangyack, a new union of Super Sentai villains led by the Gokaiger's Captain Marvelous. As the Great Leader of Dai-Shocker, Tsukasa apparently destroyed many Super Sentai teams, apparently leaving only GokaiRed and GokaiGreen alive, while Decade himself was seemingly the last remaining Rider. After he was wounded in his battle against Gokaired, Doktor G used the opportunity to overthrow him and take control of the organization. The story about Riders needing to destroy Sentai to survive was a lie, and Doktor G was actually allied with Dai-Zangyack and using both GokaiRed and Decade to destroy the other heroes and afterwards kill the nominal leaders of the two organizations. However, Tsukasa and Marvelous had realized that trap in the beginning before the war starts. The destruction of the Super Sentai actually just an act and the truth was, all the Super Sentai and Riders were just sent into a rift between dimensions. Tsukasa turned against Dai-Shocker and Dai-Zangyack, supported by all other Riders and Super Sentai. Alongside the Gokaiger, he killed General Shadow. In the end, he faced Doktor G, the man behind the new Dai-Shocker, and defeated him with the help of the Super Sentai team Goseiger, and Kamen Riders Ryuki and Blade. However, after being defeated, Doktor G was revealed to be Decade's old enemy, Narutaki, who escaped afterwards, and his real identity was left a mystery.
Super Hero Taisen Z
Decade is set to appear in Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z. He joins with Kamen Riders Fourze, Meteor, Super-1 and Space Sheriff Gavan Type G, as well as the Super Sentai teams Choushinsei Flashman and Tokusou Sentai Dekaranger, as the three forces of super heroes confront Space Shocker.
Kamen Rider Decade: The World of Tsukasa Kadoya ~The Garden Inside the Lens~
In the novel which is the reimagination of the TV Series, Tsukasa is generally the same personality wise. But his world is different from the world in Kamen Rider Decade: All Riders vs. Dai-Shocker movie. He has no sister and his parents live overseas. In the novel he’s described as a young NEET tired of his mundane life, the only thing he finds interesting is photography. He ends up stumbling upon an abandoned photo studio, inside he finds an old camera standing on a tripod. Tsukasa picks it up and peeks through the viewfinder. Through the viewfinder, Tsukasa sees a completely different world. Instead of a flimsy Eijiro Hikari that knocks down a backdrop, the group uses the camera to travel between worlds. In fact, Eijiro doesn’t even exist in the novel. The photo studio isn’t some ordinary photo studio that was just abandoned. It actually manifests itself in front of people that are tired of their own world and want to find a new world. Natsumi, Kaito and Narutaki, all found the photo studio in their own respective home worlds. In addition, Dai-Shocker, the evil organization itself was never existed.
Tsukasa met Natsumi in the first unnamed world he traveled to. A world where monsters are attacking humans. Natsumi sees this and calls Tsukasa by the name ‘Decade’ and gives him the Decadriver, telling him he must transform. A confused Tsukasa goes along with it and becomes Decade for the first time. They travel to another world together and meet Daiki Kaito. He acts hostile towards Tsukasa, but still decides to follow the two on their travels.
With 6 A.R. Worlds discovered leaving Den-O, Kuuga and Kabuto's World unexplored, the trio arrived at The World of Den-O with Tsukasa’s clothes change into a doctor’s uniform as they arrive. Tsukasa meets Ryotaro, but his Imagin friends are missing. Tsukasa agrees to help him find them. The Den-O characters feel very off-character as their characteristics are different. Momotaros comes off as rather polite compared to his jerkish and self-centered TV counterpart, and actually refers to people by their real names instead of snarky nicknames. The Final Form Ride remains the same, as Tsukasa turns Den-O into Momotaros.
Arriving at Kuuga's World, Tsukasa is dressed as a painter and meets Yusuke Godai while having difficulties of remembering the name Decade and usually goes with “Kamen Rider Dickens.”
Despite being Kuuga’s world, Tsukasa doesn’t interact much with Godai.
Instead he meets a mysterious unnamed girl, with her sentences spoken in broken grammar. This girl approaches different men saying “Do you want me?” The girl is referred as Yuri after Tsukasa sees her holding a lily flower, yuri in Japanese. She asks the question to Tsukasa, but Natsumi doesn’t like it and uses her Laughing Pressure Point technique on him. Yuri takes a liking to Tsukasa and connects with him. Tsukasa says they are the same type of people, and relate to each other. But he reveals that he never really paid attention to her and never cared about her. From the start, Natsumi oddly suspects that Yuri is a Gurongi. This is never truly touched upon until the where Yuri reveals the truth and challenge the Riders into a fight. Her Gurongi group is not mentioned, but she’s described as a Moth, meaning she's of the Ba class of Gurongi. She causes people to explode by sticking moth scales from her wings on people. Decade and Kuuga defeat her together. Decade's Final Form Ride for this Kuuga is also different: while it retains the ability to transform Kuuga into the Kuuga Gouram, the Gouram is described as a rhinoceros beetle, despite it traditionally being a stag beetle, which is also the same insect Kuuga is based on. Godai gives Tsukasa a thumbs up as they leave.
They shortly move onto the world of Kabuto, where they meet Souji Tendou, still as arrogant and confident as ever, and considers himself as the strongest Rider ever. The group enters Bistro La Salle where Hiyori Kusakabe works. Hiyori sees Kaito and Tsukasa, dressed as a ZECTroopers, claiming that the two of them ate without paying. Tendou hears this and is enraged. The three of them fight and Tendou actually beats them with only a pair of chopsticks. However, it turns out to be a pair of Worms that ate without paying. Tsukasa and Kaito are eventually captured by ZECT, only to have Tendou save them. Tsukasa thanks him and says that he never thanks people. Tsukasa starts respecting Tendou. For some inexplicable reason, Tendou has the Clock Up AttackRide Rider Card and gives it to Tsukasa after he realizes that he is Kamen Rider Decade. Tsukasa uses the Clock Up card as Kuuga, meaning the AttackRide cards aren’t restricted to their respective Riders in the novel. In the end, the Worms that impersonate both Tsukasa and Kaito have been defeated. As the fight is over the trio goes back to Tsukasa’s world.
Between all the traveling, a vampire has been attacking in Tsukasa’s world, leaving behind drained corpses. The group investigates and they find out that Narutaki is the vampire. Just like the group, Narutaki originally had his own homeworld, but abandoned it to find a new one. However, he’s been traveling for so long that his mind has been deteriorating and can barely remember who he really is. He was originally a human, but somehow in his journeys, he had lost his humanity. The Kamen Riders have a very pure energy that Narutaki seeks to consume: the Rider Cards. Thus, he sends Kaito to steal them for him. Kaito reveals his betrayal towards the team and gives Narutaki Tsukasa's 9 Heisei Rider Cards and Narutaki reveals his real form: a red-hued demon.
Kaito suddenly has a change of heart, and sacrifices himself to save Tsukasa. All hope seems to be lost; Tsukasa even uses a Diend card with the DecaDriver. While it turns him into a cyan-hued version of Decade. However all seems hopeless, as he was badly overpowered by Narutaki and reverts into human form again. Natsumi, who had just realized that she has special powers all along, creates a special card with the 9 previous Heisei Riders on it. Tsukasa uses it, which summons the previous 9 Heisei Riders to do their finishers onto Narutaki. They then turn into cards and attached themselve onto Decade, turning him into Final KamenRide: Tsukasa, which can be described as Complete Form without a K-Touch. Tsukasa then finishes off Narutaki via a Rider Kick. In his dying words, Narutaki wanted to destroy all worlds and then create his own ideal world. He dies looking at Natsumi, knowing that she had the power to do what he wished for.
With the crisis over, Tsukasa returns to his world and Natsumi decides to go with him and live in his world. When they return, Tsukasa finds an article where it says Tsukasa's world version of Natsumi died after committed suicide due to worldly troubles.
A few decades later, an unchanged young Kaito revives and reappears in front of an elderly Tsukasa. Kaito tells him it’s time to visit Natsumi’s world. There they are greeted by a young Natsumi, and Tsukasa finds himself as a young man again.
Video Game appearances
Kamen Rider Battride Wars
He mostly appeared as Kamen Rider Decade. Only in Episode 14 of Kamen Rider Decade, he briefly transformed into Kamen Rider Den-O Sword Form after possessed by Momotaros.
Kamen Rider Decade's ending theme is entitled "Ride the Wind".
- Height: 192cm
- Weight: 83kg
- Punching Power: 4t
- Kicking Power: 8t
- Maximum Jump Height: 25m
- Maximum Running Speed: 100m/6
Decade can transform into any previous Kamen Rider with access to that respective Rider's powers and weapons. However, during the battle against Kamen Rider Dark Kiva in the Nega World, Tsukasa has lost his power to transform into Kamen Rider Decade as well as all cards are turning into black. Later, Tsukasa was able to restore his power and all cards are return to normal. One of Tsukasa's particular gestures is dusting his hands, or running a hand along the blade of his sword, while fighting.
Through the Kamen Ride and Form Ride cards Decade can transform into any of the previous primary nine Heisei Era Kamen Riders and their forms, with the exception of their most powerful forms.
With the Kuuga card, Decade transforms into Kamen Rider Kuuga's Mighty Form.
Kuuga Dragon Form: With the Dragon Form card, Decade assumes Kuuga's Dragon Form.
Kuuga Titan Form: With the Titan Form card, Decade assumes Kuuga's Titan Form.
Kuuga Pegasus Form: With the Pegasus Form card, Decade assumes Kuuga's Pegasus Form. Tsukasa does not suffer from the same sensory overload that was depicted in the original series.
With the Kiva card, Decade transforms into Kamen Rider Kiva's Kiva Form.
Kiva Garulu Form: With the Garulu Form card, Decade assumes Kiva's Garulu Form.
Kiva Basshaa Form: With the Basshaa Form card, Decade assumes Kiva's Basshaa Form.
Kiva Dogga Form: With the Dogga Form card, Decade assumes Kiva's Dogga Form.
With the Ryuki card, Decade transforms into Kamen Rider Ryuki. Decade can also travel through mirrors like the original Ryuki.
With the Blade card Decade transforms into Kamen Rider Blade's Ace Form.
With the Faiz card, Decade transforms into Kamen Rider Faiz, initially sealed after being used once. Regained when Tsukasa teaches Takumi that protecting those dear matters regardless of who he is.
Faiz Axel Form: With the Axel Form card, Decade assumes Faiz's Axel Form. While in the original series, this form moved at the speed of sound for only 10 seconds, Decade's version allows him to match the Worms and the ZECT Riders' Clock Up system which moves at the speed of light.
With the Agito card, Decade transforms into Kamen Rider Agito's Ground Form.
Agito Flame Form: With the Flame Form card, Decade assumes Agito's Flame Form.
Agito Storm Form: With the Storm Form card, Decade assumes Agito's Storm Form.
With the Den-O card, Decade transforms into Kamen Rider Den-O's Sword Form.
Den-O Gun Form: With the Den-O Gun Form card, Decade transforms into Kamen Rider Den-O Gun Form. This card does not appear in the television series, but is featured in Hobby Japans Detail of Heroes book on Decade.
Decade once transformed into Gun Form when he used the Kotae wa Kiitenai card and uttered Ryutaros' signature phrase and performed his signature pose.
Den-O Ax Form: With the Den-O Ax Form card, Decade assumes Den-O's Ax Form.
Den-O Rod Form: With the Den-O Rod Form card, Decade transforms into Kamen Rider Den-O Rod Form. This card does not appear in the television series, but is featured in Hobby Japans Detail of Heroes book on Decade.
Den-O Wing Form : With the Den-O Wing Form card, Decade transforms into Kamen Rider Den-O Wing Form. This card does not appear in the television series, but is featured in Hobby Japans Detail of Heroes book on Decade.
Kabuto Masked Form: With the Kabuto Masked Form card, Decade transforms into Kamen Rider Kabuto Masked Form. This card is not used in the series, but in the S.I.C Hero Saga side story, Masked Rider Decade: World of Stronger where Decade uses this card to protect himself from Delza Army General Steel's steel shaft. Unlike the other Form Ride Cards, this card transforms Decade into the default form of the Rider instead of a mid-upgraded form.
With the Kabuto card, Decade transforms into Kamen Rider Kabuto's Rider Form, used once before its power is sealed. Regained when Tsukasa taught Mayu the true meaning about her Grandmother's saying of looks being deceiving while praising Souji's family bonds.
Kabuto Hyper Form: With the Kabuto Hyper Form card, Decade transforms into Decade Kabuto Hyper Form in SIC Hero Saga, World Of Stronger to fight Stronger Charge Up Form, but was defeated.
With the Hibiki card, Decade transforms into Kamen Rider Hibiki, used once before its power is sealed. Its silhouette turned black after Hibiki's metamorphosis into Gyūki. Regained after Asumu becomes Hibiki and Tsukasa learns the true meaning of the Ongekidō.
It is unknown if Decade has the ability to transform into Kamen Rider Skull, as he is only a movie-exclusive Rider, but Skull's card has a black background, similar to the Rider Cards for the main Riders, which may mean it can change Decade.
Like the Heisei Riders, Decade is shown owning Rider Card versions of the 15 Showa Kamen Riders, but is seen only using one of the cards.
With the #2 card, Decade transforms into Kamen Rider 2, but it is never seen in the series.
With the V3 card, Decade transforms into Kamen Rider V3, but it is never seen in the series.
With the Riderman card, Decade transforms into Riderman, but it is never seen in the series.
With the X card, Decade transforms into Kamen Rider X, but it is never seen in the series.
With the Amazon card, Decade transforms into Kamen Rider Amazon, but it is never seen in the series.
With the Stronger card, Decade transforms into Kamen Rider Stronger, but it is never seen in the series.
With the Sky Rider card, Decade transforms into Sky Rider, but it is never seen in the series.
With the Super-1 card, Decade transforms into Kamen Rider Super-1, but it is never seen in the series.
With the ZX card, Decade transforms into Kamen Rider ZX, but it is never seen in the series.
With the Black card, Decade transforms into Kamen Rider Black, the first time he received this card it was stolen by Diend to be used to call Black, claiming that Decade can't use the card just yet.
With the Black RX card, Decade transforms into Kamen Rider Black RX, but it is never seen in the series.
With the Shin card, Decade transforms into Kamen Rider Shin, but it is never seen in the series.
With the ZO card, Decade transforms into Kamen Rider ZO, but it is never seen in the series.
With the J card, Decade transforms into Kamen Rider J, but it is never seen in the series.
- Height: 199cm
- Weight: 102kg
- Punching Power: 12t
- Kicking Power: 16t
- Maximum Jump Height: 50m
- Maximum Running Speed: 100m/4
Complete Form is the true form of Decade that is able to manipulate the power of other Riders' final forms, accessed through the K-Touch once he regains the powers of all of the Heisei Kamen Riders. Referred to as the "King of the Rider Worlds", he wears the Decade Complete KamenRide Card on his helmet, embedded in the Decade Crown, and the others' KamenRide Cards on his chest. When Complete Form features the most powerful forms of the Heisei Kamen Riders on the cards (as seen in the Super Adventure DVD, the series finale, and Movie War 2010), this version of Complete Form is called Strongest Complete Form (最強コンプリートフォーム, Saikyō Complete Form). In the novel, Natsumi creates a Kamen Ride card which Tsukasa as Kamen Rider Decade Cyan Version uses it which summons all 9 Heisei Riders to perform their finisher attacks at Narutaki before they could turn themselves into Rider Cards and attached to Decade into becoming Final Kamen Ride Tsukasa which is a cyan version of Decade Complete Form only without the K-Touch.
In Kamen Rider Decade: All Riders vs. Dai-Shocker, Kamen Rider Diend uses a Final Form Ride card that turns Decade into the Jumbo Decadriver (ジャンボディケイドライバー, Janbo Dikeidoraibā), a larger version of the Decadriver which is worn by a Diend Kamen Ride Card-summoned Kamen Rider J to transform into Decade Complete Form Jumbo Formation (ジャンボフォーメーション, Janbo Fōmēshon). This complete form is identical in appearance to the regular, except he is J's Jumbo size, and does not wear the K-touch but the Decadriver on his belt buckle.
- Height: 192 cm.
- Weight: 83 kg.
- Punching Power: 5 tons
- Kicking Power: 10 tons
- Maximum Jump Height: 30 meters
- Maximum Running Speed: 100 meters per 5 seconds
For most of the first act of Kamen Rider × Kamen Rider Double & Decade: Movie War 2010, Decade assumes Kamen Rider Decade Violent Emotion (仮面ライダーディケイド激情態, Kamen Raidā Dikeido Gekijōtai). This form is Decade's false final transformation into the destroyer of worlds, with Decade's body in a lighter shade of magenta, the eyes assuming a more sinister appearance, and the normally yellow Signal Pointer (the light on Decade's helmet) is violet. While this form appears similar to Decade's normal form, it is drastically stronger, both possessing greater combat capability (enough to go toe-to-toe with Kuuga Ultimate Form and destroy countless other riders) and able to use Attack Ride cards such as Clock Up without having to transform into the associated Rider first.
In the novel, Tsukasa uses Kaito's Kamen Ride DiEnd card which transform him into this version of Decade.
- Height: 190cm
- Weight: 87kg
- Punching power: 5t
- Kicking power: 7t
- Maximum jump height: 35m
- Maximum running speed: 100m/5.2s
Tsukasa was also once possessed by Momotaros, who then used the Den-O belt to transform into Sword Form to fight the Mole Imagin.
When possessing Tsukasa (or anyone else) or by himself, Momotaros can assume Den-O's Sword Form through the Terminal Buckle, the first and most used form in the series. When in Sword Form he uses the DenGasher as a standard sword-style weapon. This form is the most balanced among Den-O's forms, probably due to Momotaros' prominence among the other Imagin. He occasionally forms different finishers for defeating enemies, despite parts 2, 3, and 5 being similar to each other. He also uses a Special Version in I'm Born which resembles the aforementioned parts, the only difference is that Full Charge is used twice. There is also a Final Version used against the Death Imagin which uses energy from the other Taros, Sieg, and Kamen Rider Zeronos. In the Cho Den-O series Sword Form also has a triple Roundhouse Rider Kick that Momotaros dubs his "Super Finishing Attack." The DenKamen Mask resembles two halves of a peach, which is based on the story of Momotaro.
- Main article: Decadriver
- Change announcement: KAMENRIDE
- Form Change announcement: FORMRIDE
- Attack announcement: ATTACKRIDE
- Rider Form change announcement: FINAL FORMRIDE
- Final attack announcement: FINAL ATTACKRIDE
- Decade Complete announcement: FINAL KAMENRIDE
Tsukasa transforms into Decade through the use of the Decadriver belt that is based around the Rider Cards. By inserting a card into the Decadriver, Decade can invoke the cards' abilities. In Complete Form, the Decadriver is moved to the right side of his belt where Decade inserts his Final Attack Ride Cards and activates them by touching the Decadriver's window.
- Main article: Ride Booker
Decade's primary weapon is the Ride Booker (ライドブッカー, Raido Bukkā) which has three modes: the default Book Mode (ブックモード, Bukku Mōdo ), which is placed on the left side of his belt and holds the Rider Cards that Decade uses in his arsenal, Gun Mode (ガンモード, Gan Mōdo) which can be used to execute the Dimension Blast (ディメンションブラスト, Dimenshon Burasuto) finisher and Sword Mode (ソードモード, Sōdo Mōdo) which can be used to execute the Dimension Slash (ディメンションスラッシュ, Dimenshon Surasshu) finisher.
When fighting Gyūki, Decade briefly fought as Ryuki with a red bullfighting cape adorning the blade of Sword Mode. In either Mode, Decade primarily uses the Ride Booker in the place of the Heisei Kamen Riders' signature weapons, regardless if in the form of blades or firearms, unless it is weapons with a nature like that of Kuuga's, Agito's, or Kiva's.
- Main article: Rider Cards
- Main article: Final Kamen Terminal K-Touch
The Final Kamen Terminal K-Touch (ファイナルカメン端末ケータッチ, Fainaru Kamen Tanmatsu Kētatchi) is a special touchscreen cell phone. Originally from the World of Negatives in the possession of the Dark Riders, the K-Touch was designed to attach onto the Decadriver replacing the card slot, which is moved to his right hip, allowing Decade to transform into Complete Form. In this form, Decade can still use his Ride Cards by inserting them in the card slot and touching its visor, allowing Decade to summon the powers and weapons of the ultimate form of any of the previous Kamen Riders. When a Rider is summoned, the cards on Complete Form's chest and shoulders change to match the Rider's specific Kamen Ride card and the summoned Rider copies Decade's motions. When activating the K-Touch's functions in Complete Form, any of the Nine Heisei Riders present will be transformed into their most powerful form. In Hyper Battle Video, K-Touch seemed has a function to summon all previous Heisei Riders in their respective ultimate form without Decade pressing the buttons of the K-Touch.
Final Kamen Ride
- Ryuki Survive: Summons Kamen Rider Ryuki Survive, armed with the Drag Visor-Zwei. Using the Ryuki Final AttackRide Card allows Decade to execute a Burning Saber-style attack alongside Ryuki Survive.
- Faiz Blaster: Summons Kamen Rider Faiz Blaster Form, armed with the Faiz Blaster. Using the Faiz Final AttackRide card allows Decade to execute a Photon Buster-style attack alongside Faiz Blaster Form.
- Kabuto Hyper: Summons Kamen Rider Kabuto Hyper Form. Using the Kabuto Final AttackRide card allows Decade to execute a double Hyper Kick or a Maximum Hyper Cyclone (armed with the Perfect Zector in Gun Mode) alongside Kabuto Hyper Form. Also used by default form Decade to transform into Decade Kabuto Hyper Form in SIC Hero Saga, World Of Stronger to fight Stronger Charge Up Form, but was defeated. Also used again by Decade Complete to fight Stronger Charge Up Form but unfortunately beaten by Stronger Charge Up' Super Stronger Electric Kick.
- Kiva Emperor: Summons Kamen Rider Kiva Emperor Form, armed with the Zanvat Sword. Using the Kiva Final AttackRide card allows Decade to execute a Final Zanvat Slash-style attack alongside Kiva Emperor Form.
- Hibiki Armed: Summons Kamen Rider Armed Hibiki, armed with the Armed Saber. Using the Hibiki Final AttackRide card allows Decade to execute an Ongeki Ha: Kishin Kakusei-style slash alongside Armed Hibiki.
- Den-O Liner: Summons Kamen Rider Den-O Liner Form, armed with the DenKamen Sword. Using the Den-O Final AttackRide card allows Decade to execute a Train Slash-style attack alongside Den-O Liner Form.
- Blade King: Summons Kamen Rider Blade King Form, armed with the King Rouzer. Using the Blade Final AttackRide card allows Decade to execute a Royal Straight Flush-style attack alongside Blade King Form.
- Agito Shining: Summons Kamen Rider Agito Shining Form, armed with the Shining Caliber. Using the Agito Final AttackRide card allows Decade to execute a double Shining Clash-style attack alongside Agito Shining Form.
- Kuuga Ultimate: Summons Kamen Rider Kuuga Ultimate Form. Using the Kuuga Final AttackRide card allows Decade to channel flames from his hand alongside Kuuga Ultimate Form. This K-Touch option is not used in the television series but however appeared in Kamen Rider Battride War.
In Kamen Rider Decade: The Last Story, Kuuga and Den-O's options are changed to Rising Ultimate (ライジングアルティメット, Raijingu Arutimetto) and Super Climax (スーパークライマックス, Sūpā Kuraimakkusu, written as "Chou Climax" on the card) respectively, including the card on Decade Complete Form's chest armor.
- Main article: Machine Decader
The Machine Decader (マシンディケイダー, Mashin Dikeidā) is Decade's personal Honda DN-01. Like Decade himself, the Decader can assume the form of the respective Rider's Machines.The bike can also transforms into previous Rider Machines as it exhibits this ability when Decade (as Faiz) transforms the Decader into the Autovajin and Side Basshar (as Decade's Violent Emotion).
- Main article: Decade Bazooka
The Decade Bazooka (ディケイドバズーカ Dikeido Bazūka?) is a firearm weapon of Decade's that is only seen in the Kamen Rider Decade: Protect The World of Televi-Kun Super Adventure DVD. To tie in with the DVD, the Decade Bazooka is constructed from cardboard punchouts and glue by Yusuke Onodera, much like prizes given out with issues of the Televi-Kun magazine. Though it expands from its original toy-like size to the size of a full bazooka when given to Decade, it clearly remains a cardboard prop, though this does not impede its functionality as a weapon.
Behind the scenes
Tsukasa Kadoya is portrayed by Masahiro Inoue (井上 正大 Inoue Masahiro?), who reprised his role in Kamen Rider × Super Sentai: Super Hero Taisen. In his appearance in OOO, Den-O, All Riders: Let's Go Kamen Riders, Decade was voiced by an unidentified voice actor. In Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z, Kamen Rider Decade's voice was provided by Katsuhiro Suzuki (鈴木 勝大 Suzuki Katsuhiro?), who plays Hiromu Sakurada/Red Buster in Tokumei Sentai Go-Busters.
As Kamen Rider Decade, his suit actor was Seiji Takaiwa (高岩 成二 Takaiwa Seiji?), who has been the suit actor for the majority of leading Kamen Riders in the Heisei era (except Kuuga and Hibiki). In Super Hero Taisen, his suit actor was Jun Watanabe (渡辺 淳 Watanabe Jun?).
- Even though he can copy all previous riders, he lacks the power of Riders from the Showa Era, any extra Rider, and any Kamen Rider after him.
- However, he eventually transforms into Kamen Rider #1 in Super Hero Taisen, which shows that he can change into any of the 15 Showa Riders.
- As said in the Net Movies, Decade is the Heisei Era equivelant of Kamen Rider ZX.
- The name "Gekijōtai" (激情態) is a pun on the word for "theater" (劇場, gekijō), which literally translates as "Fury Form". The May 2010 issue of Hyper Hobby magazine, as well as S.H. Figuarts toyline, officially translates this name as "Violent Emotion", a literal translation of gekijō (激情) and omitting any translation for tai (態).
- Ever since Decade, Rider Belts are referred to as "Drivers".
- Tsukasa is the only Rider to have no definitive type, but in the end always becomes the hero not an anti-hero through the series until movie war (Super Hero Taisen can't be count due it's just his plan to defeat his enemy).
- When Decade transforms into another rider, usually his belt didn't change. But it is revealed that the belt can change appearance in Super Hero Taisen via holographic imaging.
- Decade is currently the last primary rider to not have multi-forms (this is due to to the other form changes considered as just copying and not his actual ability).
- Tsukasa is the last primary Rider to make his debut in the first episode of his own series, as the following Riders make their debut as a cameo appearance in the Summer Movie of their predecessor.
- He is one of three Kamen Rider to borrow a Super Sentai's power. The other two are Ryuki and Blade.
- Coincidently, he has done it twice (the first from Shinkenger).
- Tsukasa is one of 2 leader figures that are human and not some manner of kaijin, the other being The Real Man and Woman from Kamen Rider Hibiki. Hiroshi Tennoji, Ryubee Sonozaki, Doctor Maki, and Mitsuaki Gamou are also human leader figures but they later became an Undead, a Dopant, a Greeed, and a Zodiarts respectively. Out of all of them Tsukasa is the only one to resign from his leader position.
- Kamen Rider G (voice only as Decade)
- Kamen Rider Decade: all episodes
- Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship
- Samurai Sentai Shinkenger Act 21: The Father and Son Bears
- Kamen Rider Decade: All Riders vs. Dai-Shocker
- Kamen Rider × Kamen Rider W & Decade: Movie War 2010
- OOO, Den-O, All Riders: Let's Go Kamen Riders
- Kamen Rider × Super Sentai: Super Hero Taisen
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