Deadpool (Wade Winston Wilson) is an antihero from the Marvel Comics Universe. When he first appeared, he acted as a villain of the New Mutants and X-Force, before becoming a more heroic figure later on.
Wade Winston Wilson is neither good, nor bad. He works on both sides, but is not loyal to either. He is a mercenary and assassin who would alter the world to bring down his target, for a price. Deadpool is a psychopath, a hero, a villian, and the most mysterious madman you could ever chance to encounter.
Deadpool originally started off as a supervillain to the New Mutants, a team of teenaged X-Men, but eventually became an antihero who fought alongside Wolverine, the X-Men and even several Avengers. On the big screen, Deadpool showed up as the chatty mercenary Wade Wilson before he gains his regenerative powers.
Gowther the doll joined the 7 deadly sins and went on adventuring with them to end the demons with the 10 commandments. Gowther may have betrayed the 7 Deadly Sins a few times but he has not left the 7 deadly sins and still goes on trying to end the demons and prevent the holy war form happening again.
Gowther was bestowed with the Commandment of Selflessness「 無欲 むよく , Muyoku」. It causes those inflicted by its curse to lose their memories, feelings, and entire sense of self.