Dating before the time of Fredbear was Draco.Draco was a Dragon animatronic.Owned by William Afton he was a singer to entertain children.When buisness slowed down came Iris,the guitarist.When not performing Draco was playing as an evil Dragon as groups of kids plays as knights.Iris would help the kids on their journey when they travled in the colder places.When Fredbear came they both  went out of date and cameras were not put in ther.Then an orphan came to Fredbear's.Purple Guy killed her and put her in a suit.Specifially Iris.30 years later Yellowjacket came crashing in through a Portal.Iris killed him and put him an extremley worn dragon suit.Since it is in their programing they love each other.Yellowjacket's mind will take control  in a fight becaus of his extreme skill.