The further adventures of the new Tokusatsu TV show Kamen Rider Zero-One! Features a brand-new villain, RAGNAROK, created exclusively for this collection! Arturo Hiden is KAMEN RIDER ZERO-ONE! Along with his trusty humagear companion Izu, he's saved the world numerous times as the insectile superhero! But when his company HIDEN INTELLIGENCE is attacked by the mysterious RAGNAROK, Arturo must not only face the volcanic cluster cell-powered villain but also his own past... Collects Kamen Rider: Zero-One #1-4.