Terix t'Llweii
- Full name: Terix Val'Danadex Trel t'Llweii
- Also known as: Tevik
- Species: Romulan
- Gender: Male
- First two assignments were covert intelligence missions on Vulcan (ENT Novel: Kobayashi Maru)
- By February 2155: Centurion, Fifth Legion, Romulan Guard (ENT Novel: The Good That Men Do, Kobayashi Maru, Beneath the Raptor's Wing)
- July 2155: Abducted, brainwashed by Ych'a under auspices of the V'Shar, forcing him into Vulcan persona of Tevik (ENT Novel: Beneath the Raptor's Wing, To Brave the Storm)
- Brainwashing persisted through August 2156 (ENT Novel: Beneath the Raptor's Wing, To Brave the Storm)
- Brainwashing broken by May 2157; Terix returned to Romulan service at this time (ENT Novel: To Brave the Storm)