This is bull$**t! One minute I'm a remorseless assassin and the next I'm a wise-cracking heroic goody-two-shoes! Will the writers make up their minds already?!
~ Deadpool

Villains who have versions that have different characteristics of their original selves. For example, Carnage, normally known as Cletus Kassidy with the symbiote suit, is a created monster from Peter Parker's own blood in the Ultimate Marvel Universe who does not speak and drains life for sustenance.