he walked out from the shadows and in front of Vanessa, Abby and Mike, as the animatronics had stopped attacking for the moment. “Knock knock. Hi sis.” He said in a teasing voice which is followed by Vanessa, “Michael?” She questioned, which was followed by Mikes, “What the Hell is going on, Vanessa?”
And to which Michael interrupts any words spoken between them, “Oh, let me guess. She never told you about me. That's my sister for ya. She always was a little selective with the truth. I'm Michael. Michael Afton. I am so pleased to finally meet you.” As to which Mike reminded him that his father is dead.
“Yeah. But I'm here to continue his legacy. Just in time for FazFest.” Which got them confused for a second until they realized he was behind it all, helping Charlotte and the others escape.