Zero

a feared member of the 12 penances who's power is confirmed when it's learned that he's one half of a dangerous planet eating monster.

He confronts Ichimatsu in a series of actual games to play such as a footrace and trivial games before actually taking Ichimatsu after "knowing" about him.

He's defeated by Ichimatsu's Lucky Leo Nova which resulted in him getting eaten and excreted out in a rocklike formation, he soon becomes Ichimatsu's "prisoner" before fusing with the Princess of Kochab to make the giant planet eating monster.