- You may be looking for the Doctor's travelling companions, most often known simply as "companions".
Bernice Summerfield identified the Unbound Doctor and herself as travelling companions after returning to N-Space, rather than necessarily friends, (AUDIO: Dead and Breakfast [+]Loading...["Dead and Breakfast (audio story)"]) despite previous claims to friendship by both parties, despite trouble in the relationship. (AUDIO: The City and the Clock [+]Loading...["The City and the Clock (audio story)"], Asking for a Friend [+]Loading...["Asking for a Friend (audio story)"])
In fact, the Unbound Doctor called them "good friends" later that same day, while Queen Zilla was in control of Bernice's body. At the time, they were pretending to be a married couple. (AUDIO: Dead and Breakfast [+]Loading...["Dead and Breakfast (audio story)"])
The Tremas Master introduced Peri Brown to the Rani as the Sixth Doctor's latest travelling companion, "although her travelling days will soon be over..." (TV: The Mark of the Rani [+]Loading...["The Mark of the Rani (TV story)"])
In a possible future for the Eighth Doctor, (PROSE: The Tomorrow Windows [+]Loading...["The Tomorrow Windows (novel)"]) the Tenth Doctor noted that Emma was the only time travelling companion he ever had. (TV: The Curse of Fatal Death [+]Loading...["The Curse of Fatal Death (TV story)"])