Sheldon Cooper (Jim Parsons) is a consistently rigid character throughout ... In season 5's "The Werewolf Transformation" episode, Penny (Kaley Cuoco) cuts Sheldon's hair after his long-term barber ...

Missy, Sheldon, and Georgie Cooper three children had similar hair colors, too. Mary’s hair is what some people might call dirty blond, while others would classify it as mousy brown.