Just a scribble trying to make sense of his design. It will probably keep varying some for a while. And considering he's a spiritual being he can probably alter form as needed. He can easily be more surreal or appear as a bogeyman if it helps further his goals.
He could even appear as one's lost loved one demanding vengeance. He is such the vengeful demon... or, more accurately, he preys on those seeking vengeance because it is easy for him to drive them to it.
Here he's shown manipulating a school girl who is quick to blame a bully for her unhappiness to the point that she might be willing to kill for it. So he's trying to work the angle from both sides.