A Ledosian representative who works with Voyager to find Chakotay and Seven of Nine in Natural Law, then tries to exploit the opening of the barrier protecting the Ventu.
Barus appears in the Voyager episode Natural Law. He is the Ledosian official who deals with Captain Janeway when a shuttle carrying Chakotay and Seven of Nine crashes inside an energy barrier on his planet.
The barrier was set up long ago by an unknown species to shield the Ventu, a people living without technology, from the rest of Ledos. To rescue her officers, Janeway has to bring it down, and Barus is delighted.
He sends an expedition into the newly opened territory to study the Ventu and assess their land. Janeway, unwilling to leave an isolated culture exposed, removes the Ledosian team and restores the barrier over his protests.