>>101670244Superhuman strength, enough to do things like rip people limb from limb, punch holes through them, knock heads off, etc.
Barely registers pain.
A healing factor, though exactly how powerful it isn't very clear (a comic had pic-related happen).
Lacks the need to eat, drink, rest, breathe, etc.
Can possess people if his body is destroyed, and form a new one if he takes over a blood relative (they don't need to be alive for this, he can just use a corpse).
The video games also gave him the ability to teleport (or simply move quickly) by turning into fog, though since it's spin-off media I don't know how much that counts (one of the novels also gave him a kind of "death aura" that made plants and small animals that were around him any length of time die, while people became full of irrational fear and dread and got a sick feeling in the pit of their stomachs in his presence, even if they don't know he's around).