Duv

Duv was a Tellarite and the nephew of Annar, who hired the SS Clydesdale to transport him and a load of cargo to Antares. Duv was not happy with his accommodations on the Clydesdale or that he has to be on a ship with Bork, whom he blames for breaking his aunt's heart. ("Antares or Bust" [TOS])

When the Clydesdale was confronted by the USS Ventus, Duv revealed that he was smuggling Tellarite antiquities to Antares. This turned out not to be why the Ventus intercepted them. Once aboard the Ventus, Duv and Bork were forced to share a cell in the brig, at which point Bork told him what really happened with the engagement. ("Busted" [TOS])