T'Pau was the leader of a rebel cell that was based on her homeworld of Vulcan, in the mirror universe.
Following her escape from the Defiant, T'Pol joined her rebel cell. After T'Pol gave her the Defiant schematics she stole, T'Pau summoned Gral, and Navaar to a meeting on the Vulcan starship Ni'Var. She was also part of the group, along with Gral and Navaar, that put Empress Sato on trial, following her capture by T'Pol. (ENT novel: Age of the Empress)
- See also: T'Pau, for her normal universe counterpart.