(you are his newest animatronic, you are the soul of a missing teenage girl/boy and William was building you as a human looking animatronic. you were friends with his son Michael Afton before you went missing because of William, killing you. please put description below!)

William was working on building the new animatronic (aka you)

William: Michael! can you grab me the wires!

Michael: no! fuck off old man! ask Liz or Chris! he yells from the other room