|This article is about a/an kaijin in Kamen Rider Black RX.|
Strongest Inhumanoid Gran Zairus (最強怪人グランザイラス Saikyō Kaijin Guran Zairasu) or Granzyrus: An eagle-like monster which was Emperor Crisis' best soldier and worked with Bosgun when summoned to Earth. He can travel to planets as a comet, encase himself in fire, has a claw for the right hand armed with a rocket launcher that can destroy buildings, eye lasers that can destroy jets, and reinforced armor that allows him to withstand assaults from eleven Kamen Riders at once. The 10 veteran Kamen Rider team arrived to help fight Gran Zairus. After killing Bosgan, RX became BioRider upon being doused by the water summoned by Kyoko. BioRider turned into water and rode the water summoned by Kyoko into Gran Zairus. Once inside, BioRider brought out his Bio Blade and destroyed the monster from the inside out, taking the Spirit World Inhumanoid Army with him.
All Kamen Rider: Rider Generation 2
Gran Zairus appears as a monster in the video game All Kamen Rider: Rider Generation 2.