If I had a nickel for every kpop demoness out there, I'd have...

Just trying to think of all the characters that'd fall under that label of being both a popstar and a demoness.

Currently I can think of:
-Rumi (K-Pop Demon Hunters)- kpop, a half demon
-Evelynn (LoL, KDA)- kpop, succubus
(would Ahri count?)
-Verosika Mayday (Helluva Boss)- pop, succubus

Honorable mention:
Ember McLain (Danny Phantom)- poprock, ghost

Marceline from Adventure Time probably counts. Vampire/Half-Demon musician, though exactly what genre she is is a little tricky to pin down.