Simon was a teenager who got his girlfriend pregnant in the episode Joy to the World. His girlfriend fainted at a Christmas Show put on by their school. He is the biological father of Rachel Cuddy. He was portrayed by actor Lucas Till
He is about seventeen to eighteen years old. He kept hallucinogenic mushroom in his locker and frequently gives it to Natalie. There was also a large bottle of Tylenol (TM). Two days after his baby was born, Natalie had passed away. Since neither of the parents wanted to keep the child, Lisa Cuddy adopted her.