Task: Explanation
Input (English): 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. Question: David Hahn illustrated stories for a DC Comics character published under who? Answer: Vertigo imprint
Output (English): 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 spinoff, both published under the Vertigo imprint.