Characters appearing on Terminator: The Sarah Connor Chronicles, but never on-screen.
- Main: Characters designated by the show's starring credits.
- Recurring: Characters appearing on screen in at least 3 episodes.
- Minor: Characters appearing on screen in less than 3 episodes.
- Unseen: Characters mentioned, but not seen on screen.
“Andrea Walker was a female high school student attending Crest View High School in the fall of...Andrea Walker
“Mr. Henriksen was a teacher at John Connor's Crest View High School in Red Valley, New Mexico...Mr. Henriksen
“Cynthia Nolan was a female high school student attending Crest View High School in the fall of...Cynthia Nolan
“Wayne Parker was a teenage male high school student who attended the Crest View High School as...Wayne Parker