maybe something to do with illusion disks

well.... according to the fazbear's fright book "out of stock" he's some kind of toy, a plushtrap biter (or was it chaser? idk anymore). as in that book the toys in a store are not only LITARLY called plushtrap chasers, but they also behaive the same: chase you, and stop when you flash a light on them. but i think THE plushtrap (so that's the one from fnaf 4) is probably just like the nightmares: not actually real, but some kind of strange bad-dream-like thing based on fazbear entertainment products. also it is suspected that fnaf 4 isn't just any dream, but the crying child's coma after the bite of 83/87 (not sure which number is the right one)

also yeah this is a way too long speech but at least it kinda explains it all.

yea i agree maybe plush trap is the plush trap chaser but with an illusion disk

yeah something like that. or it's just like the others litarly a part of the coma. idk.... the question about "what exactly is fnaf 4 and it's creatures" is very confusing.

l think it willam controling them to do his work they look just like him

He’s a creepy little gremlin child