Bezerker first appeared when Casey, as Micromax, tried to switch back to his Eyeclops to battle the Sewer Men. As Bezerker, Casey broke free of the monsters' grasp, but was still unable to see them, and thus decided to grab the rescued Suzi and flee. The pair got to a Telepad, but quickly found themselves in the path of another massive tank. Bezerker ripped through it easily, and upon learning that the exit lay at the top of a nearby tower (thanks to Suzi reading the sign out for him), decided ascending the tower wasn't a task he was cut out for and switched form to the Iron Knight.