Twisted Reality World Boss
Class World Boss
Species Mutant/Amalgamation
Affiliation(s) Villain Alliance
Original Appearance(s) Mushroom Kingdom Fusion

The Abomination is Mushroom Kingdom Fusion's true final boss. It is a monster made up from the entire Villain Alliance, except for the Mewtwo. The player faces the Abomination in the game's final level, The Castle That Doesn't Make Sense.


  • The sprite of The Abomination made by LittleBreadPixel originally featured the greenish substance as red, representing gore.[1]
  • The Abomination sprites do not contain Mewtwo, although he is in the Villain Alliance.
World Bosses
Bowser | General Morden | Dr. Wily | Loki | Crazy Hand | Dr. Eggman | 343 Guilty Spark | Legion | Abomination
Villain Alliance
Bowser | Dr. Wily | Dracula | Zero | Ganondorf | Ridley | Dr. Eggman | Abomination