Hulk vs Wolverine vs Martian Manhunter vs Superman
Which one is the hardest to permanently put down??
Normally, Wolverine wouldn't be here, but since he recently survived having all the meat burned from his bones, and was only a skeleton, yet came back none worse for the wear, he gets in. Somewhere, healing factor became regeneration. This beats out Hulks losing a third of his body mass feat.
So Wolverine is now truly immortal. I bet he can even survive the core of the sun now. That lil bastard has the most hardcore, yet so far out his powerset feats, that i wanna gut Marvel editors at times.
And this is canon. No alternate reality. 616!!
Now the lil runt gets even harder to debate against. Sometimes i wonder if Marvel remembers that the guy works best in a team setting. A guy who can survive that doesn't do well on teams.