One of the 7 Wings of Hell: Lust
Highlevel demon/incubus with the ability to change his physical form. Seo has a weird hobby of disguising himself and going around as a low level demon, committing weird petty actions and such. His subordinates have no way to explain this to others and are unfortunately just living with the fact that their boss is a weirdo even by demonic standards.
Honestly hes just a trashy fuckboy.