Ultimate Chimera
From the Super Mario Wiki
The Ultimate Chimera is a character in the game Mother 3, and a gimmick in Super Smash Bros. Brawl. It only appears on the New Pork City stage of the game, where it will randomly appear anywhere across the stage, and it will start attacking the players. The creature is invincible, and any attempts at damaging it or knocking it away will fail. If the Ultimate Chimera manages to attack any of the players on the stage, it will instantly KO that player, sending them flying across the stage. Each bite deals 200% damage.
