He isnt your typical 2 horned individual firey pits of hell, but he does do evil acts like demon alot of the things related to him are demon like possession, making deals? DEALS WITH THE DEVIL???CAUSES WEIRDMAGEDDON YALL?!? Tortures basically ford and humans! Hes a demon!
I keep seeing comments on my bill plush video saying that bill isnt a demon hes just another dimensional being but im like-
D-Do you know what a demon is?
Idk about you but alot of these fit the descriptions of bill