Candidate: Hell knight.
Intro: a flaming orange portal appears out of thin air, and the hell knight walks out. It roars at the opponent, and stands in a battle-ready position.
Costume 1: the hell knight's appearance in Doom 3.
Costume 2: the hell knight's appearance in Doom 2.
Victory pose: a pentagram burns into the floor where the hell knight is standing, and it roars in victory as fires erupt all over the stage.
Babality: the hell knight notices a mirror on the floor and picks it up. As soon as it sees it's own reflection, it jumps back and cries in fear.
Fatalities:
(Eternal agony) the hell knight throws a massive ball of plasma at the opponent which burns through their torso. While they stare in shock at the gaping hole in their chest, the hell knight stomps over, then grabs them by the neck. It bites their head off, drops the body on the floor, and repeatedly stomps on it.
(Payment for sins) the hell knight throws the opponent down, the. Grabs their ankle. A pentagram appears on the floor, and the hell knight throws the opponent onto it. A swarm of lost souls then appear around the opponent, then they eat them alive.
