Ultimate Chimera

The Ultimate Chimera (, Ultimate Chimera) is a creature from the series, specifically Mother 3.

Origin
In Mother 3, the Ultimate Chimera is first encountered in the in. Here, it is running amok and chases anyone who enters its line of sight, including Lucas and his party. It cannot be fought, as merely touching it on the overworld will cause a Game Over. When alerted, a distinct noise can be heard: the same sound is heard in Brawl when the Ultimate Chimera appears on the New Pork City stage.

The Ultimate Chimera is disabled by hitting the large button on its back; however, the bird on the creature's head later revives it by pressing the button again. In, the Ultimate Chimera can be encountered again in the bathroom floor of the in New Pork City.

As a stage hazard
The Ultimate Chimera appears as a major stage hazard in New Pork City. Appearing randomly in any part of the stage, which uses the original sound effect when spotting Lucas, it walks slowly, stopping once there is a ledge to turn around. It attacks any fighters it encounters by biting them; it can even turn around and quickly bite. At the edge it deals 100% damage and extreme knockback rivaling 's Critical Hit, if closer to its center it instead deals 200% and even more knockback. Due to the amount of damage and knockback it deals, it will one-hit KO any character unless they are lucky enough to tech or bounce off several surfaces. The bite attack also includes the original sound effect.

The Ultimate Chimera is functionally invincible; it can only be indirectly defeated if it walks over the makeshift bridge platform at the lower center of the stage and a fighter destroys the bridge, causing it to fall off the screen. When it falls, the Chimera makes the same roar sound when spotting Lucas in Mother 3.

Oddly, unlike most stage elements, the Ultimate Chimera has no trophy in Brawl.

In Smash Tour
The Ultimate Chimera appears as a Red Trophy item. When selected before a battle, it causes the user to take two fighters instead of just one from the last opponent they KO. It activates regardless of whether the user placed first in the battle.

Trophy
The Ultimate Chimera trophy is part of the Mother Series.

As a stage hazard
The Ultimate Chimera returns alongside New Pork City. Unlike Brawl, it roars when it appears, allowing players that happen to be nearby to get away, and its chomp deals an instant KO instead of launching the fighter. The attack will also deal 100% damage (with the 1v1 multiplier still applying ), but the added damage will only appear for one frame before the instant KO occurs.

Spirit
Ultimate Chimera also appears as an Ace-class support spirit. It can be summoned using the cores of and.