Phlox.
The Denobulans were a slave race of the Terran Empire. The Denobulan Phlox served aboard the ISS Enterprise as the ship's doctor.
Denobulans were not part of the rebellion against the Empire, as it was not in their nature. Although Phlox helped the rebels sabotage the commandeered USS Defiant during Jonathan Archer's attempt to overthrow the Emperor, he did so in the hopes that the Emperor would reward him for his help with concubines. (ENT: "In a Mirror, Darkly")