During his travels, Car-Heem ended up on Mobius, where he broke up a battle between Dr. Robotnik and the Freedom Fighters and pulled them all up to his ship for study. Trapped in Car-Heem's observation tank, which he had modified to duplicate the appearance and qualities of the Great Forest, the Freedom Fighters and Robotnik were forced to join forces to escape. Robotnik, much to his dismay, was forced to act the part of a Freedom Fighter in order to fool Car-Heem. Concocting a plan to trick Car-Heem into opening the tank, Sonic played dead while the Freedom Fighters boarded a vehicle Robotnik had constructed. When Car-Heem opened the tank, Sonic ran inside his large uniform and began running around to distract him. Robotnik, unfortunately, proved himself to be as evil as ever, opening the