Doctor Phlox told Feezal that Hoshi Sato was like a "language wizard", and Sato and Feezal had a brief conversation in Denobulan. (ENT: "Stigma") While Dr. Phlox tried to capture his Pyrithian bat, he was swearing in Denobulan. (ENT: "A Night in Sickbay") In 2153, Charles "Trip" Tucker and Malcolm Reed discovered a carrying case which had Denobulan writing on it. Tucker recalled having seen similar characters in Phlox's medical books. (ENT: "The Breach")