Boo Balloon

A Boo Balloon is a Boo in the shape of a blue balloon in Super Mario World 2: Yoshi's Island. They race about the screen, trying to deal damage to Yoshi. They will inflate when hit with a Yoshi Egg. After three hits, they will explode, yielding coins or sometimes a ! Switch. The Boo Balloon is not to be confused with the Balloon Boo, which appears in New Super Mario Bros..