Hans Christian Andersen

Hans Christian Andersen was a human writer of fairy tales. The First Doctor gave him the idea for one of his stories, The Emperor's New Clothes. (TV: "Conspiracy")

Barbara Wright mention him while looking in a book while she is a prisoner in 1190. (TV: The Knight of Jaffa)

As proven by the actions of Nereus, mermaids were only peaceful in the world of Hans Andersen. (AUDIO: Cryptobiosis)

Behind the scenes

 * According to The Brilliant Book 2012, Andersen was available on social-networking sites and was friends with Charles Dickens in River Song's World.