Traeg is the main antagonist of the Enterprise episode "Shadows of P'Jem".
Traeg was the leader of a group of rebels on the planet Coridan. He refused to recognise the planet's government, considering them puppets of the Vulcans. When an Enterprise shuttlepod containing Archer and T'Pol visited the planet on an official visit, Traeg had it shot down and took them prisoner. He had difficulty believing that Archer was T'Pol's superior and, as a result of T'Pol claiming Archer was the ship's steward, came to believe that she was Enterprise's captain.
Traeg contacted Enterprise, where Tucker was in command, and demanded forty phase pistols in return for his hostages. Tucker and Reed made an attempt to covertly enter Traeg's base and retrieve the pair, assisted by the Andorian Shran and his deputy Tholos, but the rescue was disrupted by an attack on the base by a group of Vulcans led by Captain Sopek. Traeg was injured during the battle that followed but, seeing Sopek, attempted to shoot him. T'Pol dived in front of Traeg and was injured by the blast. Moments later, Traeg was killed by Shran and Tholos.