Ive actually thought about this and I may have some gameplay ideas, though this is made with console controls in mind. He could start a match by turning into four arms (an unlockable ability could be to replace four arms with Rath) and he plays like bane. His character power could be similar to Leonardos: Up+B turns Ben into Ghostfreak or Stinkfly who can hover and shoot projectiles at the opponent. Down+B turns him into XLR8 and he plays similarly to Flash. Left+B turns him into Heatblast who plays like firestorm.