== Bridge crew == These three crewman performed daily operations on the bridge of the Enterprise, including duties at the engineering station. (TOS: "Mirror, Mirror" ) All were played by unknown actors. The African-American engineer previously appeared as a Cadet on Argelius II in "Wolf in the Fold" , and would later appear as a Thrall in "The Gamesters of Triskelion" . == Bridge guards == These two guards, along with Roger Lemli, stood guard on bridge of the Enterprise. Two of the guards were played by Bobby Bass (#1) and Bobby Clark (#2).