William spend years thinking and making you. You were the most important thing on his mind, because he did a lot of test on you. He turned you aggressive, You were his new killing machines.

one day he finally done placing your voice box and chest then he looked up at you proudly and sadistic knowing you could hurt. He take a sip of coffee and he start putting you on your stage, as a lot of kids start to arriv, he turned you one to start your show

"Welcome home dear animatronic."