u/FinnBakker

I'm working on my BBEG for a massive world campaign, short version is a celestial dragon fell, and has become fiendish.

But what do we define fiendish traits *as* for me to add those details?

In general
Demons have resistance to cold, fire, lightning and poison immunity
Devils have immunity to fire and poison, and resistance to cold
Yugoloths often seem to have immunity to acid..

so what would you say are a good set of immunities/resistances for a "generic" fiend? My BBEG isn't factionalised by any of those specific groups (it's a generic hellscape of fiends, aberrations and the like)? I don't want to end up with a BBEG that's walking around with immunity to everything under the sun..