Andross

The war being fought throughout the Lylat System was almost entirely instigated by a power-hungry mad scientist.

This is Andross, an anthropomorphic monkey and the main villain of the series. Several years prior to the series, he established a base on the nearly uninhabitable planet Venom, gaining the favor of the native species there and putting together an army. He often appears as a giant floating head in his boss battles, though I’ve personally never been quite clear whether it’s a very narcissistically designed spacecraft or he mutated himself into that.

As a fighter, he will be in his giant head form, shrunken down a bit for the stages. His moveset will pull from his boss battles, including the large panels of his SNES days and the grabby hands of later years.

Likelihood rating: Could happen.