I would pick Magneto from the X-Men comics. I think if he was written by better writers and comics weren't the vessel of a lot of fascistic ideals, he wouldn't come off as 'villain who goes too far'.

His backstory is so much more interesting than what powers he has. He survived the Holocaust as a child and when his powers developed, he sought out other people like him to prevent future atrocities. He formed the Brotherhood of ~~Evil ~~ Mutants and opposed humanity's attempt to kill or control mutants. He's long-lived because his experience as a Holocaust survivor is integral to his character. With that age, he's been well-read, studying science, history, literature, and art. He's educated and due to the way comics keep the timeline contemporary, he's bound to have strongly formed opinions on whatever is happening.

Having incredible power on top of that makes for such interesting questions.

"Why don't you just more often?"

"How much more efficient are trains when you can move them with your mind?"

"What are your thoughts on the concept of dehumanization?"

I dunno. Sometimes I see interesting characters and get frustrated that they're not talking about their lives or experiences. They're restrained by capitalism and you don't get to see cool interpretations of characters who you're supposed to believe are real people.

I'd love to helm a rewrite of Magneto to make him aggressively anticapitalist and antiracist I know. But it's like this character has studied the world on how to prevent fascism and genocide and he's still not calling out the contradictions of capitalism. He's not pointing out how oppression is used as a tool for profit. I want to see the guy who read Marx and then got superpowers.