Was his first Nemesis Mega Man, by any chance? Personally, I don't mind the grimdark occult stuff. Mostly because my characters tend to have a heavy scifi theme, usually robots.
That's pretty much what it boils down to. I had him ambush me on one toon while I was busy fighting PSI for a perk/mission (forget which). About two days after I gave up camping for him on that same toon.
I got zombies consistently using Haymaker and Rocket Launcher on my Might and Munitions toons, respectively. I'll have to double-check for my Gadgeteer and Inferno toons, though.
The best answer to this question is: look at the world they exist in. An atomic bomb going off within 30ft of you has zero effect on your ability to live. You can run through the Canadian wilderness in nothing but a speedo with no adverse effects to your health. You can shrug and go for a brisk jog after getting perforated…
I'd like to add that at some points the voice acting in CO doesn't sound as professionally done as it should have been. Take Zoe Loft's first monologue, for example. I get that she's supposed to talk with an odd inflection; she is psychotic, after all. But she doesn't sound psychotic in that speech. She sounds like a…