Grievous Wheel Bike
"General Grievous' wheel bike is a custom-designed mobile attack vehicle. He sits in the center sphere, and the wheel revolves around him in driving mode. The four legs are used in walking mode and to climb vertical surfaces, such as the sinkholes on Utapau where he battles Obi-Wan Kenobi on Boga. Features adjustable claws, fold-down legs for walking and blaster that launches a missile."