I guess you would have to classify the Phantom Animatronics as hallucinations, after all, they are hallucinations from the guard, who may have once visited the old restraurants, becoming scared/creeped out from the animatronics, and because the place looks all burnt and charred and whatever, that's why they look burnt. Probably. Or it could be that the NIGHTGUARD burnt down the place, or maybe even the old restraurants, and if it was the old restraunts that may make a bit more sense, as it may be the souls from the animatronics that got burnt came back to haunt him, or he hallucinates and they're charred because he remembers seeing them burnt. Also, that could explain why there is no Phantom Bonnie, because he never saw Bonnie while he burnt down the restaurants, and because Bonnie was always the first to move in all the games (excluding FNaF: SL), it may have been in the early hours. Obviously. So he would've been in the game area or main dining area in FNaF 2, or the dining hall, near the show stage in FNaF 1, or Bonnie could've been in the Parts & Services at the time.