One of the screenwriters who worked on "The Janus Directive" collaborated on Martian Manhunter, which was based on a fictional superhero.
Tom Mandrake (born May 26, 1956) is an American comics artist, perhaps best known for his collaborations with writer John Ostrander on several series, including "Grimjack" (from First Comics) and "Firestorm", "The Spectre", and "Martian Manhunter" from DC Comics. 
The Martian Manhunter (J'onn J'onzz) is a fictional superhero appearing in American comic books published by DC Comics. 
 Among the creators who contributed to the storyline were writers John Ostrander, Kim Yale, Paul Kupperberg, Cary Bates and Greg Weisman and artists John K. Snyder III, Rick Hoberg, Rafael Kayanan, Tom Mandrake and Pat Broderick. 
