Captain Darryl Oja was a Starfleet officer in the 24th century. In 2364, he was the commander of the USS Ganymede. Sometime in that year, he received an order about Sector 450 survey mission revisions from an admiral at Starfleet Mission Operations Division. The captain was requested to send acknowledgement of the receipt of this order through subspace com net security mode 045, code 100 alpha. (TNG: "Conspiracy" , okudagram) This character was only mentioned in writing.