Captain Johnson was the commanding officer of the USS Armstrong, a Starfleet vessel.


In 2369, Captain Johnson and the crew of the Armstrong worked with the famed scientist Josiah Wembley in an exploratory mission in the Gamma Quadrant. Wembley died during the mission and Captain Johnson decided to give Wembley credit for the discoveries later made by the Armstrong crew by telling the crew of Deep Space 9 that Wembley was still alive when they returned to the Alpha Quadrant. (DS9 comics: "Stowaway", "Part II")

Captain Johnson's appearance was based on that of John Tesh.