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.
OverviewHe 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.
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.