WildC.A.T.s/Aliens is a one-shot crossover comic book that was first published by WildStorm (while still a part of Image Comics) and Dark Horse Comics in August 1998. It was written by Warren Ellis, illustrated by Chris Sprouse, inked by Kevin Nowlan, colored by Joseph Damon and Laura DePuy, lettered by Bill Oakley and edited by Scott Dunbier, with cover art by Gil Kane and Nowlan. Sprouse also provided a variant cover for the issue. Despite its title implying it is purely a WildC.A.T.s story, the comic is actually far more pertinent to the related StormWatch comic series, and features the deaths of several characters from the StormWatch team.