Carnage

Dark & disturbed childhood, burned down an orphanage
Became a sociopathic serial killer, convicted for eleven consecutive life sentences
Incarcerated at Ryker's Island Prison, became cellmates with Eddie Brock
Newborn symbiote amalgamated with his blood, transforming him into Carnage
Led a group of other killers & monsters on a rampage across Manhattan
Began harboring megalomaniacal ambitions of conquest and godhood
Perished while being separated from his symbiote