Timmy Deroras

Timmy Jeremy Deroras is an Antagonist in the series Monsters United. He's the son of Amber and Gregory Deroras and the younger brother of Carrie and Riley.

Backstory
Though not learning about his older sister till season 4 when he makes his first appearance while alone in the abandoned town of Reeseville. When he was growing up, he had a special toy that belonged to Riley when she was a newborn, a toy his uncle got. He'd always sleep with it and made sure it had a perch on his dresser, almost like he idolized the toy.

Now 10, Timmy finally reunites with his sister in Season 4, he is confused why she left but realizes that the Science facility is to blame for never being their for her brother, hoping that he can forgive her, which he does on the spot.

Timmy is a spunky child with a massive imagination. Though terrified of monsters, he learns to see that they aren't exactly horrible and terrible like he thought they were.