Jon Petterson
Background
Jon Petterson's parents are Mrs. Petterson and Mr. Petterson and his sister is Jill Petterson.
During the events of Are You Afraid of the Dark?: Season 2 Episode 1 The Tale of the Final Wish played by Thomas Sievewright
Jill wakes up from her dream and gets water but doesn't check under her bed before getting back into bed and two arms come from under her bed and grab her legs. She runs to Mrs. Petterson and Mr. Petterson's bedroom and tells them that something under her bed grabbed her. Jon walks to Jill's room and asks what is going on and Mrs. Petterson tells him that Jill had a nightmare. Jill insists there was something under her bed, and after Mr. and Mrs. Petterson leave, Jon tells Jill that he grabbed her and laughs. He then tells her to grow up and stop acting like a kid. Later, Jill wakes up to Jon wearing a Halloween mask. Jill screams and then tells Jon that she hates him.