From pure observation, my theoretical thoughts is that he is using a usage of ellipses and segments to make gradients. He is also using thickness and length to determine the perspective of where the object is.

@ralph i wont mention for all of tomorrow to repay you

Also, do you want him to be a

Void (animatronic without endoskeleton containing a soul.)
Withered
Destroyed (severely damaged.)
Ghost
Animatronic (a normal animatronic.)

Any idea on how it looks?

I will make an ftl top hat :DD