Big & Little Boo
From the Super Mario Wiki, the Mario encyclopedia
A Big & Little Boo, also called Boo Clusters, is a variant of Boo that appears in the sewer levels in Yoshi's Story. Unlike other Boos who have a red mouth, they have a blue mouth. They consist of one larger Boo followed by smaller Boos. Big & Little Boos mirror the Yoshis' movements, approaching it when Yoshi came towards it. They can only be defeated by being tricked into looking away, allowing Yoshi to throw eggs at the smaller Boos in the same manner. Each group holds a melon. Big & Little Boos only appear in Stage 2-3: Jelly Pipe.
Names in other languages