Guard One
From Tardis Wiki, the free Doctor Who reference
Guard One and Guard Two were brothers. Their mother named them Guard One and Guard Two to aid commanding officers in calling them.
Guard One was guarding Peri Brown. He argued with Guard Two over the noise they heard, thinking it to be one of their gods. The Sixth Doctor told them that it was his TARDIS. After five years in prison the Doctor cured his back. (AUDIO: The Widow's Assassin)
