Tommy's mother (What If Doctor Who Was Produced By...?)
From Tardis Wiki, the free Doctor Who reference
Tommy's mother was a Cyberman and the mother of Tommy. She stated that Doctor Kildare had cured Tommy's metal fatigue "just like that" and was of the opinion that Kildare was "ever so nice". Both Tommy and his mother also observed Kildare treating a Dalek. (NOTVALID: What If Doctor Who Was Produced By...?)