Mars Attacks Image #4 was published by Image Comics on April 1, 1997, as part of a series that began in 1996. Gary Carlson and Keith Giffen write, and art comes from Abel Mouton, Andy Smith and Bill Sienkiewicz. This 36-page issue features Spawn (Simmons), Savage Dragon, Caitlin Fairchild, Grunge and Spartan, among 29 characters cataloged on VerseDB.