Boo (character)

Boo is a fictional character from the "Mario" video game series created by Nintendo. Often referred to as "Boo," this character is a ghost-like creature known for its round shape, white appearance, and mischievous nature. Boo typically appears in haunted settings and is known for its unique behavior: it becomes shy and hides when a player looks directly at it but moves closer when the player turns away. Boos are popular for their playful yet spooky presence, contributing to the charm and challenges of various Mario games, especially in titles like "Super Mario" and "Luigi's Mansion."