Kamen Rider

Katsumi Daido

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This article is about a/an rider in Kamen Rider W.
Katsumi Daido


Young Katsumi Daido

Katsumi Daido
Gender: Male
Series: Kamen Rider W
Motif: Eternity/Commando/Ghost
Rider Type: Villain (W Forever: A to Z/The Gaia Memories of Fate, Current)
Anti-Hero/Hero (W Returns: Eternal, Former)
Homeworld: Earth (Main Timeline Continuity)
First Appearance: Kamen Rider W Forever: A to Z/The Gaia Memories of Fate
Last Appearance: Kamen Rider W Returns: Kamen Rider Eternal
Number of Episode
2 (Movie)
Full list of appearances
Actor: Mitsuru Matsuoka
Masaki Suda (Young)
Ryosuke Kanemoto (Super Climax Heroes)
Kamen Rider Eternal
"Now, enjoy your hell!"
―Katsumi's words after a battle[src]

Katsumi Daido (大道 克己 Daidō Katsumi?) is Kamen Rider Eternal (仮面ライダーエターナル Kamen Raidā Etānaru?), the main antagonist in Kamen Rider W Forever: A to Z/The Gaia Memories of Fate and before Kamen Rider W Forever film, he was the main protagonist in Kamen Rider W Returns: Eternal.

Katsumi Daido

He is the leader of the organization NEVER that uses the T2 Gaia Memories. He leads the NEVER Dopants created from the T2 Gaia Memories to attack Futo City.

In The Beginning of N/Blood and Dream, it is revealed that Katsumi was born with a congenital heart defect. This, combined with a fatal car accident, prompted his mother, Miki Daido, to use her NECRO-OVER project research, based on Philip, to save her son's life as the first Necro-Over, giving him bio-stimulants to age properly. However, despite Katsumi proving to be a skilled fighter (especially with combat knives), the Necro-Over project was rejected in favor of the Gaia Memory project, so Katsumi and his mother left the Foundation. Transforming four people who recently died into Necro-Overs, they founded NEVER. Daido is more refined and enhanced than the other Necro-Overs.


Katsumi and the other members of NEVER were fighting a terrorist organization in South Asia, where he encountered a Quark named Mina and fell in love with her. After a brief meeting with Jun Kazu, Katsumi gained the experimental Eternal Memory to become Kamen Rider Eternal. But when Doctor Prospect as the Eyes Dopant killed all of the Quarks, supposedly even Mina, Katsumi went mad and killed Prospect with Memory's Maximum Drive. With the Eternal Memory damaged, Katsumi discarded it and decided to wipe out the Museum.

In the film, Katsumi first appeared attacking the helicopter Tabata is riding in, taking the T2 Eternal Memory and transforming into Kamen Rider Eternal. He takes the entire case containing the T2 Gaia Memories and goes to his accomplices. But Tabata activates a switch causing the case and helicopter to explode, scattering the Memories. However, Katsumi survives, and he and his comrades search for the remaining Memories.

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Kamen Rider Eternal prepares to fight Shotaro and Philip.

Katsumi then appears at the place the Riders of Futo came to meet Maria S. Cranberry, where he fights Kamen Rider Double as both FangJoker and CycloneJokerXtreme and easily overpowers both forms. He shuts down access to the pre-T2 Gaia Memories, saying that he and Philip are a lot alike, which only makes Philip more livid. After Double is defeated, NEVER claims the 19 T2 Gaia Memories that the Riders found.

With 25 of the 26 T2 Gaia Memories recovered and Phillip captured by NEVER, Katsumi reveals his plan to take over and rebuild Futo City in his image, with the people turned into Necro-Overs. Reclaiming the T2 Joker Memory from Philip's partner, Shotaro Hidari, Daido initiates the X-Bicker that will send out a wave to turn everyone into Necro-Overs, despite knowing that they will die as they are not enhanced as Katsumi is. Philip, with help from Shotaro, reactivates their Gaia Memories, and Maria injects a serum into Daido that causes him to start dissolving. In retaliation, Daido shoots Maria in the stomach and takes another serum to stabilize himself which seemed to weaken him.

They manages to catch up to Katsumi as he transforms into Eternal, but the latter escapes again. Double then catches up and fights Eternal on the Futo Tower. As he is about to deliver the final blow as CycloneJokerXtreme, Eternal seemed to regain his full strength and goes into his Strengthening Armament mode, using the Zone Memory to summon the other T2 Gaia Memories. He then uses the Never Ending Hell Maximum Drive to send Double falling from Futo Tower to his death, but through the support of the citizens of Futo and a strong gust of wind blowing into the Xtreme Memory, Shotaro and Philip transform from CycloneJokerXtreme into CycloneJokerGoldXtreme. Eternal then uses his energy to send one blast of energy at Double, but Double counters through the attack and hits Eternal with a kick strong enough to defeat him as well as destroy all 26 T2 Gaia Memories at once. With his very last breath, Katsumi remembers what death feels like.

Video Game Appearances

Kamen Rider Battride War II

Katsumi Daido has been confirmed to appear in Kamen Rider Battride War II as Kamen Rider Eternal, with Mitsuru Matsuoka reprising his role. While Eternal appeared in the first Battride War game, this version was confirmed to be an entirely new, unidentified character using the Eternal Memory.

Kamen Rider Eternal

Red Flare

Red Flare

"Eternal! (Old school jungle music)"
―Transformation announcement[src]
  • Height: 205 cm.
  • Weight: 95 kg.

Ability Perimeters:

  • Punching Power: ??
  • Kicking Power: ??
  • Maximum Jump Height: ??
  • Maximum Running Speed: ??

Red Flare (レッドフレア Reddo Furea?) is Eternal's weaker/incomplete form in the V-cinema Kamen Rider W Returns of Kamen Rider Eternal. This form of Eternal was accessed by Jun Kazu using the standard Eternal Memory, but due to incompatibility with the memory, he could only access the Red Flare form. Unlike it's Blue Flare counterpart, it lacks the extra Memory Slots, and Eternal Robe, and the flame designs on the arms and leg bands are red instead of blue, true to this form's name.

Blue Flare

Blue Flare

"Eternal! (Old school jungle music)"
―Transformation announcement[src]
  • Height: 205 cm.
  • Weight: 95 kg.

Ability Perimeters:

  • Punching Power: 7 tons
  • Kicking Power: 12 tons
  • Maximum Jump Height: 150 m
  • Maximum Running Speed: 100 m. per 3 sec

Through the Lost Driver and the T2 Eternal Memory, Katsumi transforms into Kamen Rider Eternal. Eternal's Maximum Drive with the Eternal Edge is the Eternal Requiem (エターナルレクイエム Etānaru Rekuiemu?), a power wave that cancels out all other Gaia Memories. Like most Riders in Kamen Rider W, Eternal has an English letter motif, in this case the letter E.

Eternal is also adorned with a black Eternal Robe (エターナルローブ Etānaru Rōbu?) cape after transformation. His catchphrase is "Now, enjoy Hell" (さあ、地獄を楽しみな Sā, jigoku wo tanoshimina?). Eternal's mask slightly resembles a horned owl and an infinity symbol. His primary Motifs are the letter E and a military commando.

In this mode, he is able to execute the Eternal Reqieum (エターナルレクイエム Etānaru Rekuiemu?) Maximum Drive utilizing the Eternal Edge. In addition to the Maximum Slots on the Lost Driver and the Eternal Edge, Kamen Rider Eternal Blue Flare has a series of Maximum Slots on belts around his chest, right arm, and left leg, for a total of 26 for every T2 Gaia Memory.

This form is called Eternal's Blue Flare (ブルーフレア Burū Furea?) form, as revealed in Kamen Rider W Returns, which is more powerful than the incomplete Red Flare form.

Strengthening Armament
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Strengthening Armament Mode

"Zone, Maximum Drive!"
―Transformation announcement[src]
  • Height: 205 cm.
  • Weight: 97 kg.

Ability Perimeters:

  • Punching Power: ??
  • Kicking Power: ??
  • Maximum Jump Height: ??
  • Maximum Running Speed: ??

By filling all 26 of his Memory Slots through the T2 Zone Memory, Eternal enters his Strengthening Armament (強化武装 Kyōka Busō?) mode.

In this mode, he is able to absorb the X-Bicker's energy to produce the Eternal Wave to execute the Never Ending Hell (ネバーエンディングヘル Nebā Endingu Heru?) Maximum Drive utilizing the Eternal Edge.

However, the Strengthening Armament is only usable in Blue Flare form.


  • Lost Driver - Transformation belt, stolen from Jun Kazu.
  • Gaia Memories - Eternal's USB-like devices that enables him in his transformation or powering his attacks. Wields only one, Eternal Memory and destroyed after it's use.
  • Eternal Edge - Dagger/combat knife utilized by Eternal for combats

Behind the scenes


Katsumi Daido is portrayed by Mitsuru Matsuoka (松岡 充 Matsuoka Mitsuru?) of SOPHIA, who also performed W and Cod-E ~E no Angō~, the theme songs of Kamen Rider W Forever: A to Z/The Gaia Memories of Fate and Kamen Rider W Returns: Kamen Rider Eternal respectively.[1] He would later perform the opening theme of Kamen Rider Drive, as well as voicing Kamen Rider 4 in D-Video Special: Kamen Rider 4.

As a teenager, he is portrayed by Masaki Suda (菅田 将暉 Suda Masaki?), who also portrayed the lead role of Philip. As Kamen Rider Eternal, his suit actor is Jun Watanabe (渡辺 淳 Watanabe Jun?).


  • Despite being stated that clear looking Gaia Memories are normally weaker than normal Gaia Memories, Eternal has proven itself to be strong enough to easily defeat even Double as CycloneJokerXtreme.
  • Since Eternal has not only defeated Double as CycloneJokerXtreme twice but also sliced through the Futo Tower, that may mean he is the second strongest W Rider aside from Double as CycloneJokerGoldXtreme.
  • Katsumi had once addressed Philip as his "brother" since they were humans that revived from the dead. Ironically, as noted by his mother, Katsumi's appearances in his teenage years matches that of Philip.


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