Candidate: Albert Wesker.

Intro: Wesker drops down onto the stage(presumably from a helicopter) and tells the opponent "You have no chance."

Costume 1: His black outfit from RE5.

Costume 2: His old S.T.A.R.S. Uniform.

Victory pose: Wesker takes his sunglasses off and glares at the opponent. He then says "I expected better."

Babality: Wesker tries to do a backflip, but lands on his back. He then cried on the floor.

Fatalities:

(Genetic superiority) Wesker tears the opponent's arm off, then their leg opposite whichever side the arm was from. While they try to balance themselves, Wesker then punches straight through their chest, grabs them by the neck, then throws them behind him.

(Evolution) Wesker Dashes behind the opponent and slams them to the floor. He pins them down then injects them with uroboros. They stand up quickly and raise their fists, then they start writhing and gasping. Wesker shakes his head and says "Damn. I had high hopes for you." Uroboros then erupts from all over the opponent's body and completely consumes them. Wesker then walks off casually as the uroboros creature goes on all fours and roars.