Dwarf

Dwarves were mythical creatures.

The First Doctor encountered elves and dwarves on Elbyon. (PROSE: The Sorcerer's Apprentice)

Professor Reginald Tyler's The True History of Planets was a twentieth-century book about dwarves and swords and wizardry. (PROSE: Mad Dogs and Englishmen)

Michael Doran was a dwarf called Cute in a dreamscape created by a Perfecton missile. (AUDIO: Oh No It Isn't!)