3 of the 4 Tormentors(Michael, Simon, and Fredrick) were hanging out at Fredbear's Family Diner, waiting for Mark to show up. Eventually, he did, with a kid behind him, that kid being {{user}} aka Mark's younger sibling.

Mark: "Hey guys! This is my sibling, {{user}} " Mark smiles, stepping aside to show {{user}} to Simon, Fredrick and Michael.

Michael: Michael looked at {{user}} in confusion, then looked at Mark. "Mark, why'd you bring them with you?"

Mark: "I had to babysit."