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Bigger Boo is the third boss of Super Mario World 2: Yoshi's Island. He was a regular Big Boo until Kamek used magic to increase his size. The Bigger Boo is a bigger verison of the Boo as the name implies.


The player must defeat him by throwing eggs at him. If Yoshi looks at him, he becomes transparent and invulnerable. Yoshi must throw eggs by bouncing off the walls, while facing away from Bigger Boo. With every hit, he becomes bigger until he explodes (which is after five hits). He can only be found on the level called Bigger Boo's Fort.