Yakon

Yakon was one of Babidi's strongest Majin fighters, an enormous green, lizard-like monster that ate light. He is encountered on Babidi’s ship by Goku, after being woken up by a couple of Babidi’s lesser minions and eating them. Realizing what Yakon was, Goku turned Super Saiyan 2, sending so much light into Yakon that he exploded.