"Mother (Sleeper)" is a title based upon conjecture.

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A mother was a Sleeper Agent and a member of Cell 114 invasion force that was accidentally activated early. Although she was a caring mother in her human persona, all memories of that identity and any regard for her family was deleted when her sleeper personality took over. As she walked off to complete her mission, her baby, who was in a pram, was run over by a car, also causing a wreck. She then successfully completed her mission and destroyed a key strategic location in Cardiff. She died in the process, blowing herself up and any information she held about Cell 114 with her. (TV: Sleeper)

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