My problem with characters who can't feel pain is that their bodies still can. As Green Arrow said in a recent episode of his eponymous show, “Just cause you can't feel your tendons being cut, doesn't mean they still aren't being severed.” Or something to that effect. read more
For example, if Deadpool and Ajax were both stabbed, Ajax would keep coming because the pain from the wound was not slowing him down in the same way it would a normal person. Deadpool would keep coming, because, despite the pain, the wound would close and heal so quickly that he’d be able to recover and keep fighting. read more