The Stilinski Triplets. Stiles, the oldest, sarcastic smart nerd, Stuart, the middlest, annoying grumpy nerd, and the youngest, Thomas, introvert lonely fast person are triplets. They have bunch of supernatural friends, including their youngest sister, Hailey, she is a year younger than her triplet brothers. Hailey is a werewolf like their friends, she’s funny. Their dad is the sheriff in town and their mom died when they were little. They can get along but most of the time they fight.