Reginald Harcourt

Reginald Harcourt was the apparent curator of the Morovanian Museum on Morovanian Minor. He wanted to gather all knowledge, doing so by draining it from the minds of visitors.

The Fourth Doctor discovered that Harcourt was really another data-storing device for the museum, and the real curator was Jephson, who was pretending to be Harcourt's butler. By feeding Harcourt false data and fictional information, the Doctor made the museum's data system crash, causing all the stolen knowledge to return to the original owners. (AUDIO:  The Renaissance Man)