Kamen Rider

Kotaro Minami

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This article is about a/an rider in Kamen Rider Black and Kamen Rider Black RX.
Kotaro Minami

Kotaro Minami in Black


Kotaro Minami 2009



Minami kotaro manga

Century King Black Sun
Gender: Male
Series: Kamen Rider Black
Kamen Rider Black RX
Motif: Black Grasshopper
Demon King
Rider Type: Protagonist
Homeworld: Earth (Main Timeline Continuity)
First Appearance: Black!! Transformation
Last Appearance: Super Hero Taisen GP: Kamen Rider 3Icon-crosswiki
Number of Episode
98 (Black & Black RX)
9 (Movies)
Full list of appearances
Actor: Tetsuo Kurata
Ibuki (Lets Go Kamen Riders!)
Hirofumi Tanaka (Voice in Super Hero Taisen)
Hiroshi Kamiya (Voice in Kamen Rider Taisen (Black))
Kenichi Suzumura (Voice in Kamen Rider Taisen (Black RX))
Kamen Rider Black
Kamen Rider Black RX


Kamen Rider Black


Kamen Rider Black RX

For the A.R. World versions of Kotaro, see Kotaro Minami (A.R. World) and Kotaro Minami (A.R. World 2).
"Kamen Rider! Black!"
―roll call as Kamen Rider Black[src]
"I am the child of the sun! Kamen Rider! Black! RX!"
― roll call as Kamen Rider Black RX[src]

Kotaro Minami (南 光太郎 Minami Kōtarō?) is the main protagonist of Kamen Rider Black and Kamen Rider Black RX. Starting with Kamen Rider Decade and continuing onto the later crossover movies, there are two Kotaro Minamis who are independently Black and RX.


Kotaro is an emotional man which has served both good and bad for him. After seemingly losing his step-brother when he became Shadow Moon, Kotaro tried very hard to get Nobuhiko back while being saddened at having to fight him. He also didn't truly give up on Nobuhiko and tried to save him even as Shadow Moon. Towards the end of his first series, Kotaro had to part with not only Battle Hopper who thanked him for everything, but also with Shadow Moon who he unwillingly defeated in combat serving as a maturity point for him. As saddened as he was for failing to save the both of them, Kotaro chose to keep on living for himself showing strength for his character. 

It was shown that Kotaro is a trendy person who is into the latest stuff. As a running gag, Kotaro has a rough side, and isn't too adept with plants. This goes even further in his second series, as Kotaro once gave too much water to Reiko's cactus and tried to make it look like someone stole the cactus while secretly throwing it away. This shows a sneaky and shameless side to his personality. He also had a habit of blaming things on Gorgom, to the point where he once blamed them over some stolen tuna.

After becoming Kamen Rider Black RX, Kotaro reunited with his bike who was also revived into Acrobatter, whom he often talks with rather humorously. Also to be noted is that unlike the previous series, Kotaro seemingly managed to help Nobuhiko regain his former self as he died after saving some kids. The death of Nobuhiko seemed to have strengthened his will as he swore in his heart that he would defeat the Crisis Empire which he eventually did. Interestingly, Kotaro seems to have become more humorous in RX.



Kotaro was born on the day of a solar eclipse, along with his stepbrother Nobuhiko Akizuki, within the same hospital. Gorgom noticed this, and both brothers were entitled heirs to their leader, the Creation King's throne. After Kotaro's parents both died (when Kotaro was around 3 years old) as a result of an apparent accident, Prof. Akizuki then adopted Kotaro alongside Nobuhiko as if they were brothers. On the night of their 19th birthday, they were captured by Gorgom and were remade into cyborgs and infused with King Stones. Kotaro received the "Stone of the Sun" to become Century King Black Sun (世紀王ブラックサン Seikiō Burakku San?). However before the final brainwashing Soichiro Akizuki interrupted the final stage of the process with Kotaro barely escaping.

Having been pursued by Gorgom after his escape, Kotaro discovers his newfound ability to turn into the a grasshopper humanoid as a result of their surgery, along with his newfound super strength and cyborg abilities.

After receiving a letter from Soichiro, Kotaro secretly meets with his foster father and learns the truth about his childhood. Soichiro reveals to Kotaro that he agreed to join Gorgom in order to receive funding for his archaeological research in exchange for Kotaro and Nobuhiko to be operated on during their 19th birthdays. When Kotaro's father had refused to join the organization, Gorgom had him and Kotaro's mother assassinated. After Prof. Akizuki is killed by five of Gorgom's Spider Mutants, Kotaro transforms once again and takes the title of "Kamen Rider Black." He then vows vengeance against Gorgom and seeks to rescue Nobuhiko from their clutches. As Black, Kotaro gains support from Nobuhiko's younger sister, Kyoko, as well as Nobuhiko's girlfriend Katsumi. He would often be found working part-time with the two girls at the Capitola café. He would also gain allies in fight against Gorgom, such as Interpol officer Ryusuke Taki and Gorgom's own Whale Mutant.

Eventually Kotaro reunites with Nobuhiko; however, Nobuhiko was converted into the perfected Century King, Shadow Moon. In their fight, just when Kotaro was winning the fight, the Creation King temporarily turned Nobuhiko back into human form again. This caused Kotaro to lose the fight as Nobuhiko turned back into Shadow Moon and launched a surprise attack. He then tried to convince Shadow Moon that Earth belongs to all living things and was landed a finishing blow. As he turned back into human form thus causing Shadow Moon to hesitate and decide against taking Kotaro's King Stone, Kotaro was killed and his family had to evacuate from Gorgom's reign over Japan. Eventually Black was resurrected and fought his way through hordes of monsters until fighting Shadow Moon and unwillingly defeating him. Kotaro was then mercilessly taunted by Shadow Moon who told him that he shall feel regret for the rest of his life knowing that he killed his best friend and step-brother Nobuhiko. Despite these cruel words, Kotaro told Shadow Moon to stay alive so they can later escape together.

Using the Satan Sabre used by Shadow Moon, Black then fought against the Creation King of Gorgom and destroyed him. The base soon started to self destruct which prevented him from getting Shadow Moon out to safety. Kotaro then looked at the ruins while saying Nobuhiko's name. With the Gorgom defeated, Kotaro visited the Capitola bar before leaving for unknown parts.


"I am the child of the sun! Kamen Rider Black! RX!"
―announcing his transformation to Black RX[src]

Half a year after the defeat of Gorgom, Kotaro is left homeless until he is adopted into the Sahara family. He became a helicopter pilot for his new family's business due to their connections, beginning a new life for himself. Unfortunately, five years later Kotaro was abducted into the Crisis Empire mother-ship. The Crisis Empire was aware of his identity as Black and gave him an offer to join them. Kotaro refused and fought back but was incapacitated when his King Stone is damaged. He was ejected into space to float aimlessly until the sun's radiation altered his King Stone. When his pod entered Earth's atmosphere, Kotaro miraculously survives and immediately discovers he had gained a new power in the shape of an evolved rider form. With his new power, Kotaro engaged the Crisis Empire forces as Kamen Rider Black RX.

Kotaro's campaign was long and grueling. In one instances, his adoptive sister Hitomi is kidnapped by Maribaron into the the Desert of Death in a plot to make her the Crisis Empire's only living heir. Kotaro attempts to rescue her using Deathgaron, only to discover a trap set by Maribaron. Deathgaron kills Hitomi, but in his grief and sorrow, RX invokes a new Rider power, RoboRider. Using his power, RoboRider fatally wounds Deathgaron before learning that the Hitomi killed was a fake and the real one was being taken to the Miraculous Valley. On his way, he meets Joe the Haze who is under the control of Nexticker, freeing him before they and Shigeru are captured by Maribaron and Princess Karuoriya. It was after they break free that Kotaro realizes the princess is Hitomi, who was abducted to replace the real princess who died and was force grown by the nearby waterfall. When he attempts to restore Hitomi's memory, Kotaro is forced to surrender when the Triplon captured Shigeru and Joe. Kotaro was then placed into a room for a hole designed to counter his abilities as both RX and RoboRider for a slow painful death. His rage to save those he love invokes another new form, Bio Rider. After killing Triplon, with Shigeru's help, Kotaro succeeded in having Hitomi regain his memory as she and the others are returned to their original ages by the people who originally resided in the valley. With only Joe and Shigeru knowing his identity, Kotaro returns to Earth.

RX with first 10 riders

Black RX with the 10 veteran Riders.

During the middle of the series, Shadow Moon mysteriously returns to seek revenge against him, shortly after, Shadow Moon was finally defeated when RX thrust the Revolcane through Shadow Moon's King Stone, seemingly effectively turning him good shortly before he died after saving two kids. With a sorrowful look of sadness as he saw Nobuhiko's corpse, Kotaro remembered Shadow Moon's actions and decided that in the end, Shadow Moon truly turned back into Nobuhiko as he swore in his heart that he would defeat the Crisis Empire and bucked up his determination. He then carried the now human form Nobuhiko's body to presumably bury him. In the finale, he was helped by the 10 veteran Kamen Riders to destroy the Crisis Empire.

Kamen Rider: Run All Over the World


Black & Black RX with Bio Rider & Robo Rider in Kamen Rider: Run All Over the World

In the film, the Crisis Empire devise a plan to defeat Kotaro Minami by reverting him back to his old form of Kamen Rider Black and sending out several revived monsters after him. However, Kamen Rider Black is assisted by another RX, who used a time warp to help his past self.[1] The two are joined by RX's alternate forms of Robo Rider and Bio Rider, and the four Kamen Riders combine their powers to defeat the revived monsters.

Kamen Rider Decade


The two alternate Kotaros from the World of Black RX and Black respectively.

In Kamen Rider Decade, a two episode arc features two different Kotaro Minamis - one from a world where he is Black RX, and one where he remains Black. The two even encounter each other. In Kamen Rider Decade: All Riders vs. Dai-Shocker, Black and Black RX appear together again, both portrayed by Tetsuo Kurata. After the battle, RX is one of the few past Riders shown to demorph into his human form, looking identical to the Kotaro Minami from the World of Black RX; Black never appears in his civilian form in the film. Official material related to the movie, like the pamphlet distributed alongside its theatrical showing, make it clear that Black RX is the original character, but Black is another Kotaro Minami who never became Black RX.

In the manga adaptation of All Riders vs. Dai-Shocker, based on the original script when the movie was planned to be the original ending of the TV series, Black, with V3 and Super-1 fight Decade, Diend and Kuuga in the final round of the Rider Battle as in the movie. When defeated Black, V3, and Super-1 expresses sadness that he "erased the Riders and can't meet them any more."

Later, also like in the movie, All Riders return to fight Dai-Shocker. Bishum/Sayo Kadoya zaps Yuusuke into Kamen Rider Kuuga Rising Ultimate and he fights Decade. Shadow Moon knows who Black RX is. The other Riders stand back and BLACK says Decade needs to fight this one alone. After Tsukasa gets through to Sayo, Black RX comes to save her from Nobuhiko Tsukikage/Shadow Moon and it is he who destroys the Stone of the Earth.

After this appearance, all following crossovers which featured All Riders would go on to feature Black and Black RX as separate independent characters, even while both continue to be the original Kotaro Minami, with the difference that one seemingly didn't go through the events of Black RX, without giving any specific explanation regarding it, not even in official extra materials.

Let's Go Kamen Riders

Black (Let's Go Kamen Riders)

Black as seen in Let's Go Kamen Riders.

RX (Let's Go Kamen Riders)

RX as seen in Let's Go Kamen Riders.

A mishap caused by the Greeed Ankh unintentionally altered the timeline which enabled Shocker to utilize a Cell 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, including Black and RX, as even though Rider history was changed, the people's memories haven't changed.

After the riders were united, they faced off against Shocker's Great Leader. Later, when joined by a force of extra riders, Black and most other riders got on their motorcycles and performed the "All Rider Break", while RX hopped into his Ridron, together all Riders rammed into the Rock Great Leader and defeating it once and for all with the All Rider Break. OOO, Den-O, All Riders: Let's Go Kamen Riders

Super Hero Taisen

Kamen Rider Black × Hikari Sentai Maskman

Black with Maskman.

Kamen Rider Black appeared in a flashback where he was part of the group of Riders defeated by Gokai Red along with Hibiki, G3-X, Knight, Zolda, and Gatack. Both Black and RX, as separate heroes, were among the "All Rider" force during the "Super Hero Taisen" incident which resulted in the Kamen Riders and Super Sentai joining forces to defeat both Dai-Shocker and Dai-Zangyack. During the battle, Black RX is shown defeating a Gormin. Afterwards, a separate Kamen Rider Black joined forces with the Hikari Sentai MaskmanIcon-crosswiki, as they protected Earth in the same year, and launched an attack against the revived Shadow Moon and General Jark. Kamen Rider × Super Sentai: Super Hero Taisen

Super Hero Taisen Z

Black RX, X, V3 (Super Hero Taisen Z)

Black RX, X, and V3 as seen in Super Hero Taisen Z.

Kamen Rider × Super Sentai × Space Sheriff- Super Hero Taisen Z-002

Black RX was part of a force of Rider and Sentai reinforcements led by Kamen Rider 1 and AkarengerIcon-crosswiki that came to assist the Riders and Sentai of recent years who were overwhelmed by the revived monster army of the Space Crime Syndicate MadouIcon-crosswiki. The combined forces of superheroes were able to turn the tide against the Madou army. They lined up and used their various finisher attacks to destroy the revived monsters.

After Demon King PsychoIcon-crosswiki was destroyed and the battle was finally over, RX appeared standing on a cliff with all the other heroes who appeared to help, to say goodbye to the heroes of recent years before taking their leave. Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z

Kamen Rider Taisen


Black & Black RX as seen in Kamen Rider Taisen.


Seven Legendary Riders (with Stronger substituted with Black)

"Because the ones who brought Badan to the surface were the Heisei Riders."
"We have no choice but to eliminate the detestable Heisei Riders along with Badan!
―Black and RX explain to Tsukasa why he and the other Heisei Riders have to be defeated.[src]

How BLACK and RX are separate again, remained unknown, either both are from different A.R. Worlds or the original Kotaro Minami himself and an A.R. world counterpart. They are first appeared attacking Tsukasa and Shotaro to take a young boy Shu Aoi with them, and telling the Heisei Riders are now nuisance to Showa Riders. With Tsukasa escaping with Shu, Joker fends off both BLACKs until Baron arrived to aid Joker, defeating his RX half with a Punish Mash/Rider Kick combo, though BLACK manage to escape with the help of Amazon and Super-1, with the two Showa Riders beating Baron when he protects Joker from a Rider Kick/Great Slice combo. In a final round between Heisei and Showa sides, BLACK aids one of the Seven Legendary Showa Kamen Riders, replacing Stronger, when the latter is defeated by Kabuto.

He faces Kamen Rider Joker, with the two Riders taking each other out with their Rider Kicks. Gaim is soon left as the last Rider standing before Ambassador Darkness of the Badan Empire reveals himself to be Ryo Murasame (Kamen Rider ZX). Together, they restore the other Riders and all 30 Kamen Riders defeat the Badan Empire. Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai

Super Hero Taisen GP: Kamen Rider 3Icon-crosswiki

"We protect the dreams of children, and continue to rain hope for everyone. That’s what it means to be a Kamen Rider!"
―Kotaro Minami reveals the meaning of being a Rider[src]

Kotaro standing with Shinnosuke and Kiriko

He and his senior Riders, Takeshi Hongo and Shiro Kazami are one of the three main Showa Riders in this movie. He remains BLACK after Shocker alters the timeline into making Kamen Rider 3 exist.

Drive Vs. Black

Black vs. Drive

Kotaro is RX again

Kotaro returns with the powers of Black RX

In a trailer, He is first seen protecting the kids who resisted from Shocker and its brainwashed agents, Kiriko and Kamen Rider Drive. Though damaged by Drive when he took a stray attack from Drive that would have hurt the kids, Kotaro managed to make Shinnosuke remember who he is and regain his original timeline memories back. He then rescued Kiriko from falling at a great height after some Shocker members attempted to kill her when they learned that Shinnosuke didn't follow orders and regained his original memories. Back in Drive Pit, they discuss about the existence of Kamen Rider 3, known as "Rider who should never have existed" after Shocker altered the timeline. Later, he somehow regains his powers as Black RX to help most of good Riders to start their final battle againtst Shocker with help of a Super Sentai Team Shuriken Sentai NinningerIcon-crosswiki and restore the original timeline. During the Rider Grand Prix, he defends Shinnosuke from Mashin Chaser while on the Ridoron.

Fighting skill

As Black, Kotaro utilized his power through physical brawling while effectively using his King Stone Flash against his opponents. He was also able to pilot a helicopter as shown in RX. After becoming RX, he has relied more on his weapons and didn't use his King Stone Flash or physical moves as effectively as his previous series hinting a drop in physical skills. He does however, become adept at sword fighting and shooting with precise marksmanship. In his later battles, Kotaro seems to have regained his physical skills through training with his seniors.

Rider Forms

Kotaro Minami x4

Kotaro's four rider forms from left to right: Black, Bio Rider, Robo Rider, and RX.

After being transformed into a cyborg and having the King Stone called the "Stone of the Sun" implanted into him, Kotaro became Kamen Rider Black who used the power of the King Stone to transform and charge his attacks.

After being ejected into space by the Crisis Empire, Kotaro's King Stone evolved giving him the power to use the more powerful and versatile Black RX form.

Batta Man
Grasshopper man

Batta Man

Kamen Rider Black (green version)

SIC Kamen Rider Black (Green Ver.)

In the first episode, Kotaro briefly transformed into this grasshopper themed monster called the Batta Man (バッタ男 Batta Otoko?, Grasshopper Man) before he became Black. He usually transforms to this form first before transitioning into his standard Black battle form.


Kotaro's transformation from Batta Man to Black


Kamen Rider Black

  • Height:197cm
  • Weight: 87kg
  • Jump: 30m
  • Punch: 15ton
  • Kick: 30.5ton


  • King Stone - Transformation device
  • Alert Point (アラートポイント Arāto Pointo?): A red device on the forehead that sends an alert when there are monsters nearby or an incoming attack
  • Strengthened Skin - Riplasform (強化皮膚・リプラスフォーム Kyōka Hifu Ripurasufōmu?): The grashopper-like exoskeleton that protects Kamen Rider Black's body from attack
  • Strengthened Muscle - Filbron (強化筋肉・フィルブローン Kyōka Kin'niku Firuburōn?): As the result of the cyborg surgery, the brown muscles under the Strengthened Skin, gives Kamen Rider Black 30 times the strength of a human.

Rider Machines

Combat Techniques and Other Body Parts

  • Rider Punch and Rider Kick: The primary killer moves in the entire series were the Rider Punch and Rider Kick which is charged with King Stone Energy at the right fist and the right foot. After delivering either one or both moves to any monsters, they would be engulfed in flames before finally destroyed. Kamen Rider Black discovered his weakness when he was fighting a Crab monster. His Rider Punch had no effect on the monster due to its strong shell. To increase his capabilities, Kamen Rider Black trained himself to find a new killer move to destroy the monster. While training, he discovered a new Rider Punch which was more effective and more deadly. These stronger variations of Rider Punch & Rider Kick gave out stronger force of light and were more blinding. The difference between the new and the old moves were that the new ones required Kamen Rider Black to touch his knees before hitting his enemies.
  • Rider Chop: This move was very rarely executed and did not have enough power to destroy a monster.
  • Multi-Eye: His eyes glow allowing him to see monsters' movements in the dark and detect their weaknesses.
  • Sensoring Ears: The triangular structures on both sides of his head would glow purple and enhance his hearing to super-human levels.
  • Rider Sensor: Kamen Rider Black's antennaes would move to detect monsters which were moving too fast to be seen.
  • Power Stripes: Black's striped bands on his neck and wrists would glow to repel any monsters' sticky fluids or goo on his body.
  • Dragon Shoot: A move only seen in episode 16. The Dragon Shoot was taught by the Interpol Agent, Ryusuke Taki. Ryusuke threw the Ultra Quartz (a wanted object in the episode) towards Kamen Rider Black where he quickly jumped and kicked it with one foot.
  • King Stone Flash: Perhaps the most powerful technique. By shouting out "King Stone Flash", Kamen Rider Black could fire a burst of energy from his belt. It worked every time to fend off the villains; whether it's the High Priests or even the powerful Shadow Moon.

Black RX
Black rx

Kamen Rider Black RX

  • Height: 198 cm
  • Weight: 88 kg
  • Punch: 30 ton
  • Kick: 45 ton
  • Jump: 60 m
  • Speed: 100/5 s

Black RX is the current Kamen Rider form of Kotaro Minami, a photosynthetic warrior as well as the evolved form of Black, using the sun as his main energy source. His Sunriser has the two pieces of Kotaro's shattered King Stone. His signature finishing move is the the RX Kick.


  • Sunriser - The Sunriser is Black RX's transformation belt that is actually the King Stone. The King Stone was split in half in response to Black's evolution, and allows for more powerful transformations. The belt design changes in response of Black RX's Form changing.

Sun Bask

  • Sun Bask - The Sun Bask (サンバスク Sanbasuku?) is a system on the abdomen to collect and store sunlight energy. The collected sunlight and the power of King Stone will become the hybrid energy of Black RX. The Sun Bask also allow Black RX to recover from injury instantly under sunlight. As sunlight is main energy source of Black RX, when Sun Bask is damaged, Black RX will lose his power. (Although it can be repaired by the power of the King Stone and sunlight)


  • Revolcane - The Revolcane (リボルケイン Riborukien?) is Black RX's sword comes out from his Sunriser belt. It has a light saber-like mode that executes the Revolcrash finishing attack, where Black RX thrusts with the Revolcane, sending an unlimited surge of energy into the enemy. However, Black RX has a fatal weakness that when he is generating the Revolcane, the King Stone will become vulnerable.
  • Wrist Communicator - the watch-like device on the left wrist of Black RX to call for his vehicles.


  • Acrobatter - The Acrobatter is the revived version of Black's old motorcycle, the Battle Hopper. It is now capable of speaking coherent Japanese, and often has conversations with Kotaro. Whenever Black RX transforms into any of his two other forms, it does the same.


Combat Techniques and Other Body Parts

  • Revolcrash
  • RX Kick - Unlike Black's Rider Kick, the RX Kick is a double-foot attack which is twice more powerful than Rider Kick.
  • RX Punch - The Black RX version of Rider Punch with twice more power.
  • Marco-Eye - Ability to see objects behind obstacle and inside the enemies' body

Releases the light from Sun Riser

  • King Stone Flash - Similar to Black, it is used to daunt the enemies and break the illusion of enemies. King Stone Flash is not always effective to Crisis Empire. When Black RX perform King Stone Flash in front of Gedoll Ridoll, It give the enemy a chance to absorb all the power of King Stone. Black RX has another similar trick to disturb the enemies, which is to releases the light from Sun Riser. It can be assumed that this is exactly like Black's King Stone Flash, but with twice the power.

Robo Rider

RX Robo Rider

  • Height: 198 cm
  • Weight: 120 kg
  • Punch: 60 ton
  • Kick: 30 ton
  • Jump: 25 m
  • Speed: 100 m/8 s

Robo Rider is a form where Black RX 's armor becomes bulky and more robotic-like, with black and yellow coloring and his Sunriser resembles a gearbox. During his duration as the "Prince of Sadness", both his strength and defense are enhanced. He is also unharmed by explosions or projectile weapons. The only downsides are that he moves slower than Black RX as well as possessing semi-robotic movement, slowing his reaction time.


Vortech Shooter

Vortech Shooter

  • Vortech Shooter - Robo Rider's signature weapon is the Vortech Shooter pistol that shoots a powerful energy blast that can destroy an enemy in one blow. According to material, this gun ranges limitless and never misses the target.


  • Roboizer - Acrobatter transforms into Roboizer when RX becomes Robo Rider. This form of Acrobatter has two blasters mounted at its rear.

Bio Rider

RX Bio Rider

  • Height: 198 cm
  • Weight: 85 kg
  • Punch: 45 ton
  • Kick: 75 ton
  • Jump: 90 m
  • Speed: 100 m/ 2 s

Bio Rider is a form where Black RX's armor becomes much sleeker, blue and silver all over and his Sunriser belt resembles a single King Stone belt. During his duration as the "Prince of Anger", his speed is enhanced. He can also transform with the speed of up to 1000m into gel for escaping traps or attacking enemies while not getting hurt in the process, as he is invincible while in his gel form. Out of it, however, RX sacrifices armor strength, leaving him more vulnerable to powerful attacks.


Bio Blade

Bio Blade

  • Bio Blade - Bio Rider's signature weapon is the unbreakable Bio Blade katana. Like the Revolcane, Bio Blade has also a light saber mode that can slash his enemy in one blow.

Mack Jabber

  • Mach Jabber - Acrobatter transforms into Mach Jabber when RX becomes Bio Rider.

Legend Rider Devices

Kamen Ride Black

Kamen Ride Black

Kamen Ride Black (カメンライドBlack Kamen Raido Burakku?) is the Kamen Ride Card which contains the power of Black. In Black×Black RX, Diend snatches the card from Decade following its awakening in the World of Black RX, claiming that Tsukasa can't use it yet, then used the card to summon the Kotaro Minami from the World of Black. In All Riders vs. Dai-Shocker, Decade Complete Form Jumbo Formation performed the Final Dimension Kick, a variation of the Dimension Kick, transforming the Shōwa Riders, including Black, and Heisei Riders into Kamen Ride cards for Decade to travel through as opposed to Final Attack Ride cards before hitting the target.

In theory, this card would allow Kamen Rider Decade to transform into Black.

Black Medal

Black Medal

Black Switch (BLACKスイッチ Burakku Suitchi?, Triangle): An Astroswitch bearing the likeness of Kamen Rider Black. It is exclusive to Kamen Rider Battle: Ganbaride, where it can be used by Kamen Rider Fourze to arm him with the Black Module (BLACKモジュール Burakku Mojūru?) on his left leg, which allows Fourze to use Black's Rider Kick finisher.

Black Ring

Black Ring

This Rider Ring which bears the likeness of Kamen Rider Black is exclusive to Kamen Rider Wizard's Wizard Ring toyline. When used by a WizarDriver wearer, it would be able to summon Kamen Rider Black.

Black LockSeed

Black Lockseed

Kamen Rider Black Lockseed (仮面ライダーBLACK ロックシード Kamen Raidā Burakku Rokkushīdo?): A Lockseed bearing the likeness of Kamen Rider Black, created when Black was defeated in the battle between the Showa Riders and Heisei Riders. Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai The core image depicts the King Stone while the lid backside image depicts Kamen Rider Black's Rider Kick gesture. When inserted into a Sengoku Driver or when channeled through the Showa Rider Lockseed, it would allow an Armored Rider to assume Black Arms (BLACK アームズ Burakku Āmuzu?). It is styled for Gaim, Kurokage, Bujin Gaim, and Kamuro in the toyline.

  • Transformation: Black Arms: Seiki Oh Black Sun!
    • Squash: King Stone Flash (キングストーンフラッシュ Kingu Sutōn Furasshu?)
    • Au Lait: Battle Hopper (バトルホッパー Batoru Hoppā?)
    • Sparking: Gorgom's Schemes (ゴルゴムの仕業だ Gorugomu no Shiwazada?)

Kamen Ride Black RX

Kamen Ride Black RX

Kamen Ride Black RX (カメンライドBlack RX Kamen Raido Burakku Āru Ekkusu?) is the Kamen Ride Card which contains the power of RX.

Kamen Rider Diend first used the card in the World of Decade, summoning Agito alongside Super-1 and Agito to fight Doctor Shinigami and the Dai-Shocker Soldiers in the 7-Eleven promotional campaign.

In All Riders vs. Dai-Shocker, Decade Complete Form Jumbo Formation performed the Final Dimension Kick, a variation of the Dimension Kick, transforming the Shōwa Riders, including RX, and Heisei Riders into Kamen Ride cards for Decade to travel through as opposed to Final Attack Ride cards before hitting the target.

In theory, this card would allow Kamen Rider Decade to transform into RX.

Black RX Switch (BLACK RXスイッチ Burakku Āru Ekkusu Suitchi?, Circle): An Astroswitch bearing the likeness of Kamen Rider Black RX. It is exclusive to Kamen Rider Battle: Ganbaride, where it can be used by Kamen Rider Fourze to arm him with the Revolcane-like Black RX Module (BLACK RXモジュール Burakku Āru Ekkusu Mojūru?) on his right arm, which allows Fourze to use Black RX's Revolcrash finisher.

Better RX Ring

Black RX Ring

This Rider Ring which bears the likeness of Kamen Rider Black RX is exclusive to Kamen Rider Wizard's Wizard Ring toyline. When used by a WizarDriver wearer, it would be able to summon Kamen Rider Black RX.

Black RX LockSeed

Black RX Lockseed

Kamen Rider Black RX Lockseed (仮面ライダーBLACK RX ロックシード Kamen Raidā Burakku Āru Ekkusu Rokkushīdo?): A Lockseed bearing the likeness of Kamen Rider Black RX, created when Black RX was defeated in the battle between the Showa Riders and Heisei Riders. Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai The core image depicts the Sunriser while the lid backside image depicts the Revolcane. When inserted into a Sengoku Driver or when channeled through the Showa Rider Lockseed, it would allow an Armored Rider to assume Black RX Arms (BLACK RX アームズ Burakku Āru Ekkusu Āmuzu?). It is styled for Baron and Gridon in the toyline.

  • Transformation: Black RX Arms: Son of the Sun!
    • Squash: Revolcane (リボルケイン Riborukien?)
    • Au Lait: Robo Rider (ロボライダー Robo Raidā?)
    • Sparking: Bio Rider (バイオライダー Baio Raidā?)

Shift Ridoron

Shift Ridoron

  • Shift Ridoron (シフトライドロン Shifuto Raidoron?): Allows Drive to activate a Legend Rider Tire Exchange. When used in the DX Drive Driver, it gives the sound for a Type Exchange into Type Ridoron (タイプライドロン Taipu Raidoron?).

Appearances in other media

Kamen Rider SD (OVA)



Main article: Kamen Rider Black RX (SD)

Black RX is the newest Kamen Rider and star of the animated short Kamen Rider SD: Strange!? Kumo Otoko. Black RX is still new to being a Kamen Rider and often leaps before he looks. In the movie, he has fallen in love with an instructor at a local sports club, which GranShocker kidnaps in a plan to destroy the Kamen Riders once and for all. He has been paired up in a team with Kamen Rider 1 and Kamen Rider ZX, the latter of which has taken a liking to teasing the young Rider. His finishing move is slashing his enemies with his Revolcane sword. He rides in a modified version of the Acrobatter motorcycle.

Unlike later crossovers which feature Black and Black RX side by side, only RX appears in this OVA.

Video Games

Super Tokusatsu Taisen 2001

Kotaro Minami/Black/Black RX is a playable character in the Sony PlayStation crossover strategy game Super Tokusatsu Taisen 2001 along with Takeshi Hongo, Hayato Ichimonji, Shiro Kazami, and Joji Yuki.

Kamen Rider: The Bike Race

Black RX appears riding the Acro Batter (Kamen Rider Black is absent) in Kamen Rider: The Bike Race, a racing game featuring the majority of Kamen Riders and Rider Machines up to Kamen Rider Agito.

Kamen Rider: Seigi no Keifu

Kamen Rider Black is soon attacked by Sasoritokages in the "Cable Room". After defeating him, he goes to the "Gas Chamber" and is greeted by General Black. He then sends Isoginjaguar to test Black's power. After Isoginjaguar is defeated, General Black tries to kill Kamen Rider Black by closing the "Gas Chamber", but it fails. Kamen Rider Black then enters the "Command Center" and soon encounters Utsubogamess, but the monster is no match. He comes face to face with General Black who reveals that the Big Gas Machine was created to evolve deceased monsters. He transforms to Hell Chameleon to face Black. With some effort, Kamen Rider Black defeat the General and escapes.

Kamen Rider Battle: Ganbaride

"To be added"

All Kamen Rider: Rider Generation 1 & 2

Kotaro, as both Black and RX is the unlockable characters on both games. His RoboRider and BioRider forms are used for super move. In the second series, RoboRider can use another technique by increasing the attack power of his Vortech Shooter, while BioRider can use another technique by slashing enemies with his Bioblade.

Climax Heroes series

"To be added"

Stage Shows

Maskman Stage Show at 3 Heroes Korakuen Yuenchi

In a stage show where the Maskman are seen fighting usual foes, Armored Army, and Gorgom show up and wind up defeating them. Kamen Rider Black & Metalder arrive to assist the Maskman.

Maskman Stage Show at Super Hero Korakuen Yuenchi

In a stage show where maskman are seen fighting Underground Empire Tube, Kamen Rider Black, Metalder, Spielban, ShaiderIcon-crosswiki, Red Flash, Blue Flash, Change Dragon, Change Phoenix, Green Two, & Dyna Black arrive to assist the Maskman.

Liveman Stage Show at 3 Heroes Korakuen Yuenchi

In a stage show where the Liveman are seen fighting their usual foes, the sorcerers clan show up and wind up defeating them. JiraiyaIcon-crosswiki & Kamen Rider Black arrive to assist the Liveman.

Liveman Stage Show at Super Hero Korakuen Yuenchi

In a stage show where the Liveman are seen fighting the usual foes, Great Star League Gozma, Reconstructive Experiment Empire Mess, Underground Empire Tube, Armored Army, & The Sorcerers Clan show up and wind up defeating them. Kamen Rider Black, Kamen Rider Black RX, Jiraiya, Princess Ninja Emiha, Red Mask, Pink Mask, MetalderIcon-crosswiki, Red Flash, Yellow Flash, & Change Dragon arrive to assist the Liveman.

Turboranger Stage Show at 3 Heroes Korakuen Yuenchi

In a stage show where the Turborangers are seen fighting Hundred Boma Tribes, Kamen Rider Black RX & JibanIcon-crosswiki arrive to assist the Turborangers.

Turboranger Stage Show at Super Hero Korakuen Yuenchi

In a stage show where the Turborangers are seen fighting Hundred Boma Tribes, Kamen Rider Black, Kamen Rider Black RX, Jiban, Jiraiya, Red Falcon, Yellow Lion, Red Mask, Pink Mask, Green Flash & Change Dragon assist the Turborangers.

Fivemen Stage Show at Super Hero Korakuen Yuenchi

In a stage show where the Fivemen are seen fighting Silver Imperial Army Zone, Fire, Bycle, Walter, Kamen Rider Black RX, Red Turbo, Pink Turbo, Red Falcon, Blue Dolphin, & Red Mask arrive to assist the Fivemen.

Jetman Stage Show at Super Hero Korakuen Yuenchi

In a stage show where the Jetman are seen fighting Dimensional War Party Vyram, SolBraver, Knight Fire, Kamen Rider Black RX, Five Red, Five Blue, Red Turbo, Pink Turbo, Yellow Lion, & Red Mask arrive to assist the Jetman.

Dairanger Stage Show at Super Hero Korakuen Yuenchi

In a stage show where the Dairangers are seeing fighting their usual foes, the Bandora Gang, Dimensional War Party Vyram, & Takewaki Kanzern show up and wind up defeating them. Janperson, Kamen Rider Black RX, Kiba Ranger, Tyranno Ranger, Dragon Ranger, Red Hawk & Black Condor arrive to assist the Dairangers.

Behind the scenes

Portrayal and Casting

Kotaro Minami is played by Tetsuo Kurata (倉田 てつを Kurata Tetsuo?). Kurata auditioned for the role of Kotaro Minami in January 1987, when he had just graduated from high school. In a 2006 interview, Kurata had stated that, during the audition, he hadn't been able to portray the character appropriately, and did not think he would get the role. To his surprise, he was chosen by Shōtarō Ishinomori himself to play the lead role, beating some 8,000 other contestants. During this period, Kurata underwent intense training that included stage combat techniques, physical exercise sessions and acting and singing lessons.

On October 4, 1987, Kamen Rider Black premiered on TBS to public and critical acclaim. The success of the series, which ran for 51 episodes, generated enough interest from Toei Company executives to persuade them to produce a sequel, something unprecedented in the Kamen Rider Series franchise. After finishing his work on Black, Kurata was approached by Toei and renewed his contract for one more year in exchange for a salary raise to work on Black's sequel, Kamen Rider Black RX, this resulted in him becoming the only actor to be the star of two shows in the Kamen Rider Series. In a 1989 magazine interview, Kurata said he preferred Black over Black RX, quoting the comedy from the latter as "excessive". It is rumored that Kurata declined later invitations to reprise his role as Kotaro in fear of being typecasted, but such rumors were never confirmed.

As Kamen Rider Black, his suit actor was Jiro Okamoto (岡元 次郎 Okamoto Jirō?) who also did work for RX along with Robo Rider and Bio Rider. Other suit actors were Tokio Iwata (岩田 時男 Iwata Tokio?), who did Robo Rider and Bio Rider, and Toshiyuki Kikuchi (菊地 寿幸 Kikuchi Toshiyuki?) who did work for Robo Rider.

Tetsuo came back to voice Kotaro Minami/Kamen Rider Black in Kamen Rider: Seigi No Keifu. In 2009, Kurata returned as Kotaro Minami in Kamen Rider Decade where he played both his Black and Black RX incarnations at the same time. The alternate RX appeared first appeared in episode 26, RX! Dai-Shocker Attack, then joining forces with the A.R. Black in the next, Black × Black RX. That same year, he had a cameo as the original Kotaro Minami, untransformed from Black RX, in the movie, Kamen Rider Decade: All Riders vs. Dai-Shocker. In All Riders vs. Dai-Shocker, Jun Watanabe (渡辺 淳 Watanabe Jun?) did suitwork for RX, Robo Rider, and Bio Rider while Jiro Okamoto also did work for RX and Black.

In OOO, Den-O, All Riders: Let's Go Kamen Riders, Kamen Rider Black was voiced by Ibuki (勇吹輝?) while Jiro Okamoto acted as suit actor for RX.

In Kamen Rider × Super Sentai: Super Hero Taisen, Jiro Okamoto again acted as suit actor for RX, while Hirofumi Tanaka (田中 大文 Tanaka Hirofumi?) provided the voice for Kamen Rider Black.

In Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai, both Black and Black RX were voiced by Hiroshi Kamiya (神谷 浩史 Kamiya Hiroshi?) and Kenichi Suzumura (鈴村 健一 Suzumura Ken'ichi?) respectively.

Rider No.

As the leading Rider protagonist of Kamen Rider Black and Kamen Rider Black RX, Kotaro Minami is labeled Kamen Rider #11 (仮面ライダー11号 Kamen Raidā Jūichigō?) and Showa Rider #11 (昭和ライダー11号 Shōwa Raidā Jūichigō?) as Kamen Rider Black & Kamen Rider #12 (仮面ライダー12号 Kamen Raidā Jūnigō?) and Showa Rider #12 (昭和ライダー12号 Shōwa Raidā Jūnigō?) as Kamen Rider Black RX. Quiz! Decade Countdown!!

Two Kotaro Minamis

  • There have been six instances where Kamen Rider Black and Kamen Rider Black RX have existed independently from each other.
    • The first was in Kamen Rider: Run All Over the World where a time warp causes Kotaro to meet his past self. He also meets himself in his other forms, Robo Rider and Bio Rider, who also arrived due to a time warp.
    • The second was in the two episode arc (RX! Dai-Shocker Attack/Black × Black RX) of Kamen Rider Decade, in which the World of Black and the World of Black RX were treated as separate dimensions.
    • The third was in Kamen Rider Decade: All Riders vs. Dai-Shocker. All returning Riders in this movie were stated to be the originals by the producers and assorted official material, like official site bios, but two Kotaro Minamis still coexisted, both portrayed by Tetsuo Kurata, similarly to the Decade TV show appearance, meaning one or both of them could have been the Kotaro Minamis from either the World of Black or World of Black RX.
    • The fourth was in OOO, Den-O, All Riders: Let's Go Kamen Riders, where there wasn't a proper explanation for their combined appearance. However it can be assumed that they are both Kotaro from different points in time similar to the aforementioned Run All Over the World.
    • The fifth was Super Hero Taisen, which yet again features both side by side, but only in the final battle, without any specific explanation for their combined appearance. The movie pamphlet distributed alongside theatrical showings of the movie references how Black's destined battle against Shadow Moon continues even 25 years later. However, since Kamen Rider Decade is involved, it can be assumed that the Kamen Rider Black in the movie is the one from the World of Black, where Kotaro never lost his powers.
    • The sixth instance was in Kamen Rider Taisen when both of them appear to battle Kamen Rider Joker. Once again, no explanation is given. But, considering Decade's involvement in the film it is likely that one or both of them are A.R. World Riders.
    • The seventh instance in Super Hero Taisen GP, will have its full details coming soon after the movie is released.

Dub names

  • Kotaro is renamed as Robert Akizuki in the Filipino dub and as Isamu Minami in Brazil.


  • Kotaro is the only Rider to be the leading protagonist of two shows in the Kamen Rider Series. Because of this, he also has the following distinctions:
    • Kotaro currently holds the record of the Rider with the most appearances.
    • Kotaro is currently the only Rider to get a completely new set of powers at the cost of his old ones. This would happen several times in the early seasons of Power Rangers, the American franchise which is adapted from the Super Sentai series. Ironically, as only Black RX was adapted into Saban's Masked Rider, Masked Rider's first form was RX (along with Super Gold (Robo Rider) and Super Blue (Bio Rider), while the original Kamen Rider Black costume was never used in the series.
    • This is debatable though, as RX`s powers seem to have all of Black`s powers plus more.
  • As Black RX's Bio Rider form, Kotaro is the first Kamen Rider who has the ability to turn into liquid via an alternate form, this power would be repeated by future Kamen Riders OOO and Wizard who can become liquid via Shauta Combo and Water Style respectively.
  • Black RX is often joked as the cheat of the Showa riders for his greatly overpowered feature in Kamen Rider Black RX.
  • Both Black and RX are homaged by Leona Heidern, a character from SNK's King of Fighters series of video games. Her Rebel Spark desperation move is almost an exact copy of the Revolcrash, including the leaping stab, shower of sparks, and elaborate pose before the opponent explodes. However, Leona performs the move with her bare hands, and the explosion is caused by her planting an explosive on her opponent. Additionally, Leona's jumping Strike Attack (Hard Punch + Hard Kick together) is identical to Black's Rider Kick, even featuring a red energy aura around her feet.
  • Most of Black RX's weapons' designs were taken from the original Star Wars movies.
    • Interesting to note is that both Kotaro and Luke Skywalker (the protagonist in Star Wars) tried to help someone close to them regain their former self.
  • Kotaro is the only Rider to get a new name upon Form Changing (going from Kamen Rider Black RX to just Robo Rider/Bio Rider).
  • Black RX accessing his weapon through his belt would later be replicated with Kamen Rider Agito.
  • Since Kotaro managed to defeat Shadow Moon, that would technically mean he is the next Creation King albeit without Shadow Moon's King Stone.
  • In the magazine where Super Hero Taisen GP reveals he, Yuto Sakurai and Deneb, and Sakuya Tachibana, Kotaro's first Rider identity listed as "BALCK", which is seemingly wrong on the typing in the magazine.

See Also


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