Peacock Undead in Isaka Form

Isaka is the human form of the Category Jack of Diamonds Peacock Undead and the first Category Jack Undead that appeared in the show. He's also the creator of the Leangle Buckle.


He deceives Garren into working for him, until he killed Sayako for meddling in his affairs. His power in human form is telekinesis, as well as summoning fireballs and mass hypnosis he used to recruit humans to his aid. Sealed by Garren's Burning Divide. In a Missing Ace preview, he chases Natsumi Miwa and Shin Magaki before an offscreen defeat at the hands of Glaive.
Peacock Undead

Peacock Undead

Video Game appearances

Kamen Rider Blade (video game)

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

Behind the scenes


Isaka is portrayed by Yasukaze Motomiya. As the Peacock Undead, his suit actor was Eitoku, who is currently known as the suit actor of all Secondary Riders of the Neo-Heisei era so far. The Peacock Undead, among other Undead, were Eitoku's earliest suit roles in the Kamen Rider Series.