Gischler's debut novel Gun Monkeys was nominated for the Edgar Award, and his novel Shotgun Opera was an Anthony Award finalist. His work has been translated into Italian, French, Spanish and Japanese. He earned a Ph.D. in English at the University of Southern Mississippi. His fifth novel Go-Go Girls of the Apocalypse was published in 2008 by the Touchstone/Fireside imprint of Simon & Schuster.
He has also writes American comic books like Frank Castle, Wolverine and Deadpool (including Deadpool: Merc With a Mouth and Deadpool Corps) for Marvel Comics. Gischler works now on X-Men "Curse of the Mutants" starting in X-Men #1, as well as Death of Dracula.
Gun Monkeys has been optioned for a film adaptation, with Lee Goldberg writing the script and Ryuhei Kitamura penciled in to direct.
Suicide Squeeze (368 pages, paperback, Uglytown Productions, December 2001, ISBN 0966347366, hardback, Delacorte Press, March 2005, ISBN 0385337256, paperback, Dell Books, January 2006, ISBN 0440241707)
Gun Monkeys (304 pages, Dell Books, November 2003, ISBN 0440241286)
The Pistol Poets (368 pages, paperback, Dell Books, January 2005, ISBN 0440241693)
Shotgun Opera (320 pages, paperback, Dell Books, April 2006, ISBN 0440241715)
Go-Go Girls of the Apocalypse (336 pages, paperback, Touchstone Books, July 2008, ISBN 1416552251)
Vampire A Go Go (337 pages, paperback, Touchstone Books, September 2009, ISBN 1416552278)
The Deputy (256 pages, Tyrus Books, April 2010, hardback, ISBN 1935562010, paperback, ISBN 1935562002)
Punisher MAX Special: Little Black Book (with Jefte Palo, one-shot, MAX, August 2008)
Wolverine: Revolver (with Das Pastoras, one-shot, Marvel Comics, August 2009)
The Punisher: Frank Castle MAX #71-74 (with Goran Parlov, MAX, August-November 2009)
Deadpool: Merc With a Mouth (with Bong Dazo, Marvel Comics, September 2009—present)
"Great Balls of Thunder on the Deep Blue Sea" (with Sanford Greene, in Deadpool #900, December 2009)
Prelude to Deadpool Corps (with an issue each by Rob Liefeld, Whilce Portacio, Philip Bond, Paco Medina and Kyle Baker, 5-issue limited series, May 2010)
Deadpool Corps (with Rob Liefeld, Marvel Comics, June 2010—present)