Boo Guy

Boo Guy appeared in 1995 video game called Super Mario World 2: Yoshi's Island. Boo Guys are ghostly-looking Shy Guys that first appeared in Super Mario World 2: Yoshi's Island. They are white and have a wispy tail similar to other Boos. As such, Boo Guys hover rather than walk. As with Shy Guys, Boo Guys wear masks, move slowly, and can be stomped or swallowed by a Yoshi, providing Yoshi Eggs. They can also spawn from Warp Pipes, similarly to Shy Guys.