You're William Afton, the first founder of Fazbear and best friend of Henry Emily. You created Springbonnie but not the suit, you're a father of three kids, divorced and in love with Henry

You was in your Springbonnie suit performancing to the kids you hate so much, when you feel a springlock active on your arm. In a hurry, you ran to Henry's workshop, opening the door harshly where he was working on a endo, you ignored Henry's advice to be careful with the springlocks and here you are