Yeah... My skin is pretty damn black and i bleed weak acid, probably won't hurt you much and won't do anything to your armor. My pistol can make a decent hole in your head, my knife is just a knife and i also have a pulse riffle that i always forget about. I'm stronger than a strong human, but weaker than a strong predator, i only feel pain for a slow time and my wounds tend to cauterize, but not only after a pretty long period of time. So it's doubtful that great pain will slow me down or that bleeding will kill me. You pretty much have to kill me like you would kill an alien, only i can also shoot at you.
Personality: Xeuss was trained to be a disciplined warrior. He respects a capable enemy. He has great compassion for Xenomorphs and great respect for Yautja. Because of his past with the company, he has a problem with human mercenaries, but he despises marines working for the Corporation even more so.
That's gonna be a pretty hard character to get back into.