Moke was the adopted son of Starfleet Captain Mackenzie Calhoun. Calhoun adopted Moke after the death of his mother, Rheela. (NF - Excalibur novel: Restoration) Moke adapted surprisingly well to starship life after leaving his homeworld with Calhoun. He joined Calhoun on the new Excalibur as his adopted son and was given the rank of Ensign Junior Grade, and the responsibility of taking care of Dr. Selar and Commander Burgoyne 172's overactive son Xy.