Like I said I would, I trained a Nero from DMC4 because I couldn't find any pre-existing ones. Think I'm done after this one since I saw a few Dante from DMC4 around already, and these are all the characters I'm interested in anyway.
IL only for now as that's my go to model, if I have buzz to spare I'll train a pony version of this one as well as my DMC3 Vergil, DMC3 Dante, and V.

The LoRA seems to have a decent grasp on his devil bringer, albeit it gets a bit confused on whether he has human arms, two demon arms, or what. So far I found I get a good result by having "claws", "demon arm", "mismatched arms" and "human arm" in the positive prompt, and "two demon arms" in the negative prompt. Unsure if all of those are absolutely needed at the same time for a good result, but it's been what's been consistent for me.

Don't hesitate to give feedback and critique.