The following is a list of characters in the FOX science fiction television series Terminator: The Sarah Connor Chronicles, including supporting characters, and important villains.
Auldridge, portrayed by Joshua Malina, is an FBI Agent who handles difficult unsolved cases involving unusual evidence or facts. Little is known about Agent Auldridge. He meets with captured Sarah Connor twice while in prison. On both occasions, he tries to get Sarah to tell him the whereabouts of her son, John Connor, but Sarah refuses to talk. He is visited by (and knows) former FBI Agent James Ellison to discuss Ellison's former case.
Presidio Alto Military Academy Cadet Captain Martin Bedell, portrayed by Will Rothhaar, would play a role in forming the core of Tech-Com using his military training and experience. Derek Reese and John Connor save him from a T-888 while he is in military prep school. In the future, he participates in a mission with John of freeing Skynet's prisoners from one of its concentration camps, Century, including Kyle Reese. Years after the event on the Century Workcamp, he sacrifices himself to save Kyle Reese, John Connor, and thirty nine prisoners from Skynet forces.
Marty Bedell, portrayed by Billy Unger, is a child targeted by a T-888 because he shares the same name as a future hero of the human resistance. Remembering that two other Sarah Connors were killed in 1984 by the T-800 hunting for her, Sarah shelters and protects the boy with the guardian terminator Cameron Phillips, while John Connor and his uncle Derek Reese hunt the T-888. In the Connor home, he prepares a book report on L. Frank Baum's The Wonderful Wizard of Oz for school. Cameron suggests the novel after finding it on a shelf in their furnished home and reminding Sarah that it was John's favorite book as a child.