The mirror-universe counterpart of T'Pol, a Vulcan serving the Terran Empire aboard the ISS Enterprise, who secretly works with the rebellion to stop the USS Defiant reaching Earth.
In In a Mirror Darkly, T'Pol is one of the few non-Terrans in a senior post on the ISS Enterprise, tolerated rather than trusted. She helps Captain Forrest regain his ship after Archer's mutiny, and uses a mind meld to make Commander Tucker sabotage the cloaking device without remembering it.
Once Archer has the Defiant, she realises what such a ship would mean for the subject peoples of the Empire. Transferred with the other aliens to the ISS Avenger, she recruits Soval and Phlox to a plan to cripple the Defiant and destroy it.
The plot fails. She is captured aboard the Defiant and questioned by Hoshi Sato, telling her that the knowledge in the ship's database of a future built on equality will eventually undo the Empire. Her fate is not shown.