Dr Jekyll is a kind, well-respected and intelligent scientist who meddles with the darker side of science, as he wants to bring out his 'second' nature. He does this through transforming himself into Mr Hyde - his evil alter ego who doesn't repent or accept responsibility for his evil crimes and ways.
Sam (Uncle Sam's) Hyde (Evil alter ego- zero responsibility)
Makes me think of Sam Hyde. He was the Parkland shooter, the Nashville shooter (as Samantha Hyde), and the Ghost of Kiev.
Shoot down all the things
Sam (Uncle Sam's) Hyde (Evil alter ego- zero responsibility)