Guard 4 (The Enemy of the World)
From Tardis Wiki, the free Doctor Who reference
A guard accompanied Donald Bruce to investigate Giles Kent's office after Kent himself tipped Bruce off to his whereabouts to see if the Second Doctor could impersonate Ramón Salamander. The guard was ordered to investigate the office and discovered "Salamander". "Salamander" then ordered that Bruce and his guard leave the office. (TV: The Enemy of the World)
