Games : Are there multiple animatronics in Five Nights at Freddy's 3?

I've been watching videos about FNAF 3 and my friend thinks the only animatronic is spring trap. In the videos I saw the player got killed by withered foxy but he still doubts me. He backed himself and said that the other animatronics are just hallucinations made by spring trap. I'm kind of confused if they are hallucinations or if there is multiple animatronics. Can somebody who actually knows tell me.