Chucko is the nominal leader of his gang of Jokerz. Moved by greed, Chucko will do anything if there is the promise of a large payoff. He willingly allowed the original Joker to take over the gang and stage mysterious high tech robberies, and to even kill a seemingly unimportant person named Terry McGinnis. Chucko tends to favor armed combat, from ray guns to bazooka's.
In the Chronos Timeline, Chucko's legs were replaced with a sphere, giving him speed and maneuverability. His weapon of choice was a double-sided lightsaber. However, Batman managed to bribe him to learn about an upcoming ambush. Chronos discovered this event and left Chucko to die in the Cretaceous Period, during a meteor shower.