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Isaka, also known as the Peacock Undead, is the Category Jack of Diamonds Undead and a major antagonist in Kamen Rider Blade. He is the first Category Jack Undead to appear.

He was portrayed by Yasukaze Motomiya.


Kamen Rider Blade

Isaka is the one who created the Rider System 3 which would allow someone to transform into Kamen Rider Leangle. However, Isaka modified the belt so that it would require the Ace card containing the Spider Undead, causing its user to be possessed by the Category Ace Undead. He also tricked Kamen Rider Garren into working for him and got him to eat the Schuld Ketsner seaweed, telling him that the seaweed would eliminate his fear when in fact it would only increase his aggression. Eventually, Garren's girlfriend Sayoko took notice of her lover's addiction and increased rage, prompting Isaka to kill her to prevent her from helping him. This caused Garren to realize the truth and turn against Isaka, leading to Isaka meeting his end when he was defeated and sealed by a vengeful Garren.

Kamen Rider Blade: Missing Ace

Isaka appears in a preview where he goes after Natsumi Miwa and Shin Magakibefore only to be defeated offscreen by Kamen Rider Glaive.

Other appearances

Kamen Rider Blade (video game)

The Peacock Undead is one of the Undead who appears in the Kamen Rider Blade video game.



           Blade Logo Villains

Category Ace
Beetle Undead | Spider Undead | Mantis Undead | Kerberos
Category 2-10
Locust Undead | Deer Undead | Trilobite Undead | Jaguar Undead | Lion Undead | Boar Undead | Buffalo Undead | Scarab Undead | Lizard Undead
Bat Undead | Zebra Undead | Pecker Undead | Tortoise Undead
Mole Undead | Jellyfish Undead | Squid Undead
Plant Undead | Moth Undead | Centipede Undead | Dragonfly Undead | Shell Undead

Royal Club
Eagle Undead | Capricorn Undead | Caucasus Undead
Peacock Undead | Serpent Undead | Giraffa Undead
Elephant Undead | Tiger Undead | Tarantula Undead
Wolf Undead | Orchid Undead

Joker Undead
Hajime Aikawa | Albino Joker

Trial Series
Trial B | Trial D | Trial E | Trial F | Trial G

Hiroshi Tennoji | Stone of Sealing

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