Five Nights at Freddy's - The creature desperately tries to remember what it once was

Now, all we have to figure out is if that's a new model that got mangled by the old animatronics, if it mangled itself, if it's one made of spare parts and if so, who made it and why. SO MANY QUESTIONS !

From what we can gather in the drawings, the kids tore him apart.
Given, THIS Foxy doesn't have a hook so it's possible that's what happened.