Tarev, a Zabrak male, served the Galactic Republic as a navigator during the era of the Galactic War. In the year 3639 BBY, he found himself serving on the Thranta-class corvette named the Outrider. This vessel had been dispatched by Supreme Chancellor Leontyne Saresh with orders to look into Hutt Cartel military actions occurring within the Vyron system. Emerging from Hyperspace, the crew observed the conclusion of a battle that involved Hutt Cartel forces, and subsequently reported what they saw to Saresh. Following this, Captain Hardin directed the corvette toward Nal Hutta, where a team descended to the planet's surface to engage in discussions with Karagga, the leader of the Cartel. This meeting turned violent, resulting in Karagga's demise and creating a vacancy for the title of Supreme Mogul.
The character of Tarev, the navigator, is featured in Star Wars: The Old Republic, a video game, specifically in the introductory cinematic sequence for the "Karagga's Palace" operation, from the Republic perspective.