Yo Bro

Yo Bros. are enemies that are encountered in Woohoo Hooniversity during the events of Mario & Luigi: Superstar Saga. The enemy is vaguely Koopa-like, and it sports a magician's hat and cape and two yo-yos (to which their name indicates), one red and one green. Whichever yo-yo it spins will indicate which Mario brother it will attack. It can also fake out, which is indicated when the "spinning" sound is not heard. It tries to fake out even at the point in the game where Luigi is trapped and it can only attack Mario. Like other Koopa-like enemies in the game, Yo Bros. are healed by fire.