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Mad Boos are Boos that appear in Super Princess Peach. Mad Boos' behavior are the opposite of that of a regular Boo; Mad Boos do nothing when Princess Peach turns her back to them, but if she faces them, they will attack her. They also appear in a rarer Big Boo form called Mad Big Boo.
- 46: An angry ghost that will attack you if you look at it!
Names in other languages
|Boo of Rage