Rowe

 was an enemy of the Third Doctor. He was a Xoanthrax scientist who kidnapped Jo Grant. He put Jo inside a mindscape generator. In each artificial scenario created by the machine Rowe played a different role — in one situation he was a UNIT soldier. He helped the Brigadier to protect Jo and the Doctor from an alien menace in the Doctor's laboratory. In another he was a governor of Rolanti and questioned the Doctor on why he was there, thinking he was investigating the colony. He then gave the Doctor as a sacrifice. (AUDIO: The Many Deaths of Jo Grant)