This article is about a kajin from Kamen Rider X. For the Phantom from Kamen Rider Wizard, see "Hydra (Wizard)".
Hydra (11, Movie) - A Hydra-themed eel monster. Destroyed by X Certain Kill Kick.
Five Riders vs. King Dark
Hydra have revived with other GOD Cyborgs, to attack all over Tokyo and, in the middle of the crisis. & they were defeated by Five Kamen Riders.