A ruthless bounty hunter who tried to steal the captured Jonathan Archer from his rival Skalaar in 2153 in order to claim the large reward offered by the Klingons.
Kago-Darr appears in the second-season Enterprise episode Bounty, played by Robert O'Reilly, best known as the Klingon chancellor Gowron. He is a competitor of the Tellarite Skalaar, who has kidnapped Archer after the Klingon Empire put a price on the captain's head for escaping Rura Penthe.
Kago learns that Skalaar has the prize and attacks his ship, demanding that Archer be handed over. The assault damages Skalaar's vessel and forces him to set down on a planet for repairs, which gives Archer a chance to try to get away.
Skalaar eventually beats his rival off and continues to the meeting with the Klingons, though the encounter helps to build an uneasy understanding between captor and captive.