This one is just bloody terrifying full stop. Monsters hiding in closets or under the bed are a thing of nightmares for most kids. A skeletal type monster with crazy hair would definitely terrify me as child.
I am still debating on whether to have my characters face only with a peeling mouth and no other senses. I feel that without having senses, the character will appear much more scary, but I feel that using the senses and adding eyes to the character will somehow enhance the character as you can design them to look how you want them to.