Madame Xanadu is a supernatural heroine and fortune-telling mystic. The occult sensitivity and powers that she possess are channeled through tarot cards. Her history is connected to the legendary King Arthur of Camelot, and she is immortal. Frequently she is called upon to aid other magic-user super-heroes. She has been a member of the Demon Knights, Justice League Dark, the Sentinels of Magic and the Spirit Squad.
- The first issue of Madam Xanadu by Matt Wagner was previewed in Hellblazer issue 244 .