Ok I'm calling it a frequency skull as this is one of those classic Tumblr finds where there is no crediting whatsoever. I had a look about and could not find the artist, so if you know who created this lined skull then please leave

Faceless is a lesser God that engulfs animals and uses their skulls to represent his head. This dark creature reminds me of that creepy fella from Spirited Away who tries to consume pretty much everything it comes into contact with. I certainly like this