Klyst

 was a Time Lord, a TARDIS, and the director of the Klyst Institute. She tried to get through the Seventh Doctor's post-regenerative madness to get to the real him. She wanted to cure the Doctor. She used to talk to him about the goings on, and wished that she had Dalek mutants to work on. She was also planting AIs into her patients so that they would have an affinity with Block Transfer Computation, and trying to stop the AIs from breaking down. (AUDIO: Unregenerate!)