Its characters include leader Sarigar, whose lower half is serpentine, the fully humanoid Torie Montroc, and Jugger Grimrod, an alien of the Thraxian race.

Carl Potts began developing the character designs and structure of Alien Legion as a sample of his artwork when he was attempting to break into the comics field.

The Alien Legion universe is a giant extrapolation of the American democratic melting-pot society where different races and cultures work together for the common good while dealing with the pluses and problems that the nation's diversity creates.

After Shooter withdrew his permission for the series, Archie Goodwin extended an offer to launch Alien Legion under the Epic Comics imprint.

[1] Potts and co-creators Alan Zelenetz (writer) and Frank Cirocco (penciler) completed development of series, and the franchise debuted with Marvel/Epic Comics' The Alien Legion #1-20 (cover-dated April 1984 - June 1987).

[9] Additionally, Marvel/Epic published two spinoffs: Marvel Graphic Novel #25 (cover-titled Marvel Graphic Novel: The Alien Legion),[10] released in 1986 and containing the story "A Grey Day To Die" by writers Potts and Zelenetz, penciler Cirocco, and the first series' regular inker, Terry Austin;[11] and the one-shot crossover with another series Law Dog and Grimrod: Terror at the Crossroads (1993).

Dark Horse Comics published the Alien Legion Omnibus Volume 1 in December 2009 (ISBN 1-59582-394-8), collecting the first seven story arcs of the original Epic Comics series; and Alien Legion Omnibus Volume 2 in May 2010 (ISBN 978-1-59582-494-3), rounding out the first series including the graphic novel.

[21] In 2010, Bruckheimer exercised the option, buying the screenplay and assigning Game of Thrones showrunner David Benioff to do a rewrite.