Superhero Survivor Round 10

Hmm among all these I'd say it's The Hulk that's next to go. Supes and Capn Marvel can fly, as can Thor with Mjolnir. Scarlet Witch can at least levitate. And we've already settled that Hulk loses to both Supes and Thor.

also feels like the least likely to just kill anyone at a moments notice, like he's done it, but he also struggles with it more than the remaining

Professor X hates killing and that wheelchair is such an obvious target. He is donzo.

I didn't mean it like that. But you are right. I just meant that he is much less likely to pull the trigger than any of those left. Of course, they are all about saving humans and humanity and doing the right thing, but that shit doesn't matter right now. Right now, it's last man standing and I don't think that Professor X has all that much gumption to last longer. 

Leaning Captain Marvel here

Hulk is the only one here who can resist psychic attacks

and X can be bested by wearing a helmet

I should have asked earlier--is there kryptonite at the site of this battle royale?

Also important to establish what color said kryptonite is.