Lucien (Sandman)

Lucien is the Librarian in the Library of Dream of the Endless in the American comic book The Sandman. He is the effective keeper of The Dreaming in Dream's absence, whose primary function is to protect the Library, wherein are contained all the books that are drempt of, but never written. We learn of several of the titles of these books, a more complete list of which can be found in , which lists fictional books.

Like Cain and Abel Lucien was originally the host of a 1970s "weird tales" comic, in his case Tales from Ghost Castle. In this comic, he was portrayed as the guardian of an abandoned castle, watching over its forgotten library. In his first appearance in Sandman (issue 2) this was retroactively revealed to be Morpheus' castle, deteriorating in the Lord of the Dreaming's absence.

Later issues of Sandman revealed that Lucien was originally Dream's first raven. An allusion to "Mr Raven", the ghostly librarian in George MacDonald's novel