Agent X is a fictional mercenary appearing in American comic books published by Marvel Comics. Created by Gail Simone and Alvin Lee, the character first appeared in Agent X #1, by Gail Simone and UDON.
Cover art for Agent X #3. Art by Alvin Lee.
Gail Simone is an American writer best known for her work in comics on DC's Birds of Prey, Batgirl, Dynamite Entertainment's Red Sonja, and for being the longest running female writer on Wonder Woman to date. Other notable works include Clean Room, Secret Six, Welcome to Tranquility, The All-New Atom, and Deadpool.
Simone at the New York Comic Con in Manhattan, October 9, 2010
Simone posing with a fan dressed as Huntress, a character whom Simone wrote in Birds of Prey, at the New York Comic Con, October 9, 2010.
Simone at the 2018 WonderCon