Downplayed: Mega-Swordd is drawn like a real-world bodybuilder, and carries one of the largest one-man weapons invented in real life.
Mega-Swordd is the result of a steroid experiment or super-soldier project gone wrong, which has also made him a psychotic killer. His weapon is designed especially for him, as superhuman strength is needed just to lift it.
Mega-Swordd has served and been trained as a minion of Emperor Evulz for most of his life. Thus when Mega-Swordd has decided to leave Evulz's employ, he continues to use the methods he was taught and hasn't been able to adjust to the less brutal methods expected of more traditional heroes.
Double Subverted: He only throws traditional villains in prison. Complete Monsters are so evil that they set off his Berserk Button, and he hacks them down brutally to prevent them from slaughtering innocents.
Parodied: Mega-Swordd has so much muscle mass that he cannot function effectively, and can barely move his arms, let alone wield his weapon. Villains that he challenges feel so sorry for him that they fake their own gruesome deaths to make him feel better.