Whos the most heroic reformed super villain?Marvel/DC

Whos the most heroic reformed super villain and im not talking charecters like quicksilver or scarlet witch real killers, terrorists etc like magneto, black adam and namor

Magneto.

certain alternate timeline Lex Luthor's

future JLU Vandal Savage

Galactus (he's a protector now. or he was in a mini series I read)\

Magneto.

No real killers.