Azazel (DC Comics)
Azazel is a fictional demon published by DC Comics. He debuted in The Sandman #4 (April 1989), and was created by Neil Gaiman and Sam Kieth. A different version of Azazel fought Madame Xanadu in The Unexpected #190 (March/April 1979) created by Cary Burkett and Juan Ortiz, which was technically a reprint from Cancelled Comic Cavalcade #1.
Read more about Azazel (DC Comics): Fictional Character Biography