Harr Caras is an Orion captain who insists that he is a scientist and not a pirate, and who bargains with Captain Pike over a time portal in the episode Those Old Scientists.
Caras appears in the second season crossover between Star Trek: Strange New Worlds and Star Trek: Lower Decks. His ship arrives at the ancient portal that has thrown Brad Boimler, and then Beckett Mariner, back to Pike's time.
Pike's crew take the Orions for raiders, a suspicion that seems fair when Caras makes off with the portal. He protests that his is a science vessel and that Orions are tired of being thought of as pirates.
A deal is reached. The Orions will be credited with the discovery of the portal, and in exchange the Enterprise may use it once to send the visitors home. The outcome matches the history Boimler knew, in which the Orions found it. Caras is played by Greg Bryk.