DaiMon Tarr commanded the Ferengi ship that the Enterprise pursued in the Federation's first face-to-face encounter with the Ferengi.
DaiMon Tarr commanded a Ferengi vessel that had stolen an energy converter from an unmanned Federation outpost in The Last Outpost. The chase ended near Delphi Ardu IV, where an ancient power drain froze both ships. This meeting was the first time the Federation came face to face with the Ferengi, and Tarr's crew proved greedy, suspicious and quick to bargain.
Tarr's away team joined the Enterprise crew on the planet, where they fought and then encountered Portal 63, a guardian of the long-dead Tkon Empire. The Ferengi tried to turn the guardian against the humans, but Portal judged the humans favourably. At Riker's request both ships were released. Mike Gomez played Tarr.