Ultimate Chimera

The Ultimate Chimera is a magenta, quadrupedal devil-like creature from Mother 3. In the Super Smash Bros. series, it is a stage hazard encountered at New Pork City in Super Smash Bros. Brawl and Super Smash Bros. Ultimate. The Ultimate Chimera appears on stage at random. It is invincible, so characters cannot damage it or knock it away, making it the most lethal stage hazard. If the Ultimate Chimera attacks a fighter, it launches them across the stage, usually resulting in the fighter being KO'd. Each bite deals 100% to a fighter if they are by the edge of the Ultimate Chimera's mouth and 200% if the fighter is trapped inside of the Ultimate Chimera.

If the Ultimate Chimera ends up on a breakable platform and a fighter breaks it, they fall off and respawn on another part of the stage.

Unlike most stage hazards, the Ultimate Chimera does not have a trophy in Super Smash Bros. Brawl, although it does have one in Super Smash Bros. for Wii U. The Ultimate Chimera also appears as a spirit in Super Smash Bros. Ultimate. The spirit depicts an upscaled variation of Ultimate Chimera's in-game appearance from Mother 3.