Who is the creator of a "The Sandman" spin-off?
Michael Demiurgos: Michael Demiurgos is a fictional character in the Lucifer series by DC comics, and is a creation of Mike Carey, based on the archangel Michael. Lucifer (DC Comics): Lucifer Samael Morningstar is a DC Comics character appearing primarily as a supporting character in the comic book series "The Sandman" and as the title character of a spin-off, both published under the Vertigo imprint.
Mike Carey