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Mario dies from having a staring contest with one in 101 to kill Mario (the right way). Another one appears in Super Mario 64 Halloween 2013: Luigi's Retarded Mansion and says "Dat Ass", scaring Luigi. Another also appeared in Super Mario 64 Bloopers: Rich Glitch where it helps SMG4 and the gang to get into Mario's house. Another Big Boo guards Daisy in R64: Boo Busters.