The name Majin Boo (
- Majin Boo (Good) - The fat Majin Boo. He is later known as Mister Boo (ミスター・ブウ, Misutā Bū).
- Majin Boo (Pure Evil) - The skinny, grey Majin Boo which represents Boo's evil side. He is known as Evil Buu in the FUNimation dub.
- Majin Boo (Evil) - The result of the pure evil Majin Boo eating his good counterpart. He is known as Super Buu in the FUNimation dub.
- Majin Boo (Pure) - The original Majin Boo and Boo's pure form. He takes the form of a child-like creature. He is known as Kid Buu in the FUNimation dub.
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