don't mind me, just uploading a very rough version of what I imagine to be Asmodai's sigil. The bigger parts represent both antlers and jaws, the infinity symbol his power and his lust, the tentacles...well, you know, and the eye and moon just looked cool.
It is incredibly rough because I'm not an artist, and drawing it with my keyboard's mousepad during class didn't help, haha. But I think it gives the general idea pretty well. I don't know if I'll ever write down lore and worldbuilding, magic and all that because I'm a nerd but I'm also lazy, but hey, if you have any question on my character, feel free to ask~