Roborobo (ロボロボ,Roborobo?): A robotic Fushigi Beast with a mouthless humanoid face with wing decorations and a mouth on its chest supporting Fuuma's scheme to supplant children with robotic duplicates and eventually eliminate the real one. When they piece together the plan, they save Genta as he is attacked by his robot double, forcing the robot into its true form as they follow it to Hessler and Roborobo. Pursing Roborobo into the Fushigi Dimension, Shaider battles the Fushigi Beast and its three phantom-masked warriors before using the Shaider Blue Flash to destroy Robobo, with all the robot duplicates evaporating as a result. Its powers include commanding robot kids, a staff with a wrench on the end, high jumping, size changing, face flames, summoning three swordsmen with explosive capes and hand rockets and a machine gun in the scalp.