Mark Ellis is an American novelist and comic-book writer who under the pen name James Axler has written scores of books for the Outlanders paperback novel series and other books, as well as numerous independent comics series.
Ellis became a full-time freelance writer in 1986. In 1980, he married Melissa Martin, a graphic designer and writer who serves as his business partner.
In the mid-to-late 1980s Ellis worked as the primary writer for Adventure Publications' line of comic magazines, scripting such diverse titles as Ninja Elite, Warriors, Netherworlds, and Star Rangers, working with legendary comics artist Jim Mooney on the latter title.
In 1987–1988 Ellis created and scripted Adventure Publications' Death Hawk, a series that featured the first published work of comics artist Adam Hughes.
For other comics publishers he wrote The Justice Machine as well as short stories for the occasional anthology, such as "A Trip To Necropolis," a story which featured the last full pencil and ink by Jim Mooney.
In 1990, Ellis co-founded Millennium Publications, serving as editor, with his wife and co-founder Melissa Martin as art director. Millennium gave early exposure to such comics artists as Mike Wieringo and Darryl Banks, and utilized such industry veterans as Jim Mooney and Don Heck. Its projects included H. P. Lovecraft's Cthulhu: The Whisperer in Darkness a twelve-issue adaptation of Anne Rice's The Mummy or Ramses the Damned among many others.