Spaceman is a nine-issue, science fiction comic book miniseries written by Brian Azzarello, illustrated by Eduardo Risso, and published by Vertigo. Azzarello and Risso previously collaborated for more than ten years on the Vertigo series 100 Bullets, as well as other projects such as the Flashpoint miniseries Batman: Knight of Vengeance.

100 Bullets is an American comic book published by DC Comics under its Vertigo imprint. Written by Brian Azzarello and illustrated by Eduardo Risso, the comic book ran for 100 issues and won the Eisner Award and Harvey Award.