Guest Star :: Rex Linn
Rex Linn has guest starred in 4 episodes of Young Sheldon.
101. Pilot as Principal Petersen
Aired September 25, 2017On his first day at the school, Sheldon's teachers are already complaining to Principal Petersen about their new student.
110. An Eagle Feather, a String Bean, and an Eskimo as Principal Petersen
Aired January 4, 2018When Principal Petersen worries that his school's curriculum is no longer challenging Sheldon, he suggests Mary and George consider sending him to a gifted school in Dallas.
113. A Sneeze, Detention, and Sissy Spacek as Principal Petersen
Aired February 1, 2018When flu season hits Medford, Sheldon takes extreme measures to remain healthy.
116. Killer Asteroids, Oklahoma, and a Frizzy Hair Machine as Principal Petersen
Aired March 29, 2018Sheldon looks for a new direction in life after he doesn't win the school science fair.