Spawn?Has SC ever had a guest character that isn't a videogame character?
It's difficult to think of Souls characters that would be a good fit.
Ornstein was the best I can think of. He already has to charge up his lunge, and has a cool AT... I think his moveset fits really well.
Gehrman could work if you make his shotgun point blank or only part of an AT... but clashes with Zasalamel, should he be in the game.
Outside of just taking a random NPC and throwing a generic sword & shield moveset on to them, I can't think of much else, and that's best left for CaS if you ask me.
I'd like to see... pffff, nobody really. I can't think of any character who's really caught my attention in the last couple of years.