- You may be looking for the mysterious figure known as the Curator.
A curator was the manager of an institution like a museum.
The curator of the National Gallery in London told the Eleventh Doctor that the name of the Time Lord painting in the Gallery was neither No More nor Gallifrey Falls, but Gallifrey Falls No More. (TV: The Day of the Doctor)
As part of the deal with their Egyptian government, Ibrahim Hadmani was dubbed curator of the London Museum of History and Antiquities for the entirety of the Egyptian exhibit's ten year loan. (PROSE: The Last Pharaoh)