He is a multi dimension being like other demons and deities, in order to see them you have to go trough a certain "rewiring process" that unlocks certain extra sensorial abilities that allows you to you see these dimensions, however it comes with a price (your soul). This guy that looks more like a neanderthal than an homo sapien is hinting something--------------->https://youtu.be/iNgIl-qIklU?t=655