Justin's mother had a fairly normal pregnancy with some morning sickness. He was born on his due date weighing 8 pounds, 15 ounces and measuring 23 inches long. His early developmental milestones like sitting up and teething were generally on par with averages, though he grew and lost teeth earlier than most. He began speaking later than typical, around 18 months, and his first words referred to a seal stealing his shoe at an aquarium. As a child, Justin was very attached to his mother and would cry when she left the room. He also showed signs of egocentrism and mixed languages as he began forming sentences between German and English.