Tosk was a Tosk who lived during the 24th century. In 2369, Tosk became the first visitor to the Alpha Quadrant through the Bajoran wormhole. He was convinced to dock at Starbase Deep Space 9 for repairs. The Tosk's ship was a one-person vessel, with standard systems, which enabled Chief O'Brien to repair his ship easily. O'Brien later helped the Tosk evade the Hunters, to retain his honor, rather than be captured alive. (DS9: "Captive Pursuit")