Walker later failed to meet the monthly title's deadlines and was replaced by Ryan Ottley. The story surrounded the adolescent son of the world's most powerful superhero, who develops powers and starts his own superhero career. In 2003, Kirkman and Walker created Invincible for Image's new superhero line. Su created the 2002 Image series Tech Jacket, which ran six issues, and the one-shot title, Cloudfall. While working on that book, Kirkman and E. Later, while pitching a new series, Science Dog, Kirkman and artist Cory Walker were hired to do a SuperPatriot miniseries for Image Comics. His first comic book work was the 2000 superhero parody Battle Pope, which he co-created with artist Tony Moore, self-published under the Funk-O-Tron label, and was adapted into a season of 8 animated webisodes that appeared on Spike TV's website in 2008. Kirkman was a fan of zombie films such as the Night of the Living Dead series and Zombi 2 as well as zombie video games such as Resident Evil. Kirkman was born November 30, 1978, in Lexington, Kentucky, and was raised in Cynthiana, Kentucky. He has also written a number of episodes for The Walking Dead and Fear the Walking Dead.

Kirkman is also known for creating and producing the television series Outcast and Invincible, both adaptations of his own comic book series. In 2018, Skybound expanded to create Skybound Games to develop video games based on its intellectual property.

The company also manages the license for The Walking Dead and Invincible. In 2010, Kirkman founded entertainment company Skybound Entertainment in order to develop properties in traditional and new media, including comics, television, and film. He is one of the five partners of Image Comics, and the only one of the five who was not one of its co-founders. He has also collaborated with Image Comics co-founder Todd McFarlane on the series Haunt. He is best known for co-creating The Walking Dead, Fear the Walking Dead, Invincible, Tech Jacket, Outcast, Oblivion Song and Fire Power for Image Comics, in addition to writing Ultimate X-Men, Irredeemable Ant-Man and Marvel Zombies for Marvel Comics. Robert Kirkman ( / ˈ k ɜːr k m ən/ born November 30, 1978) is an American comic book writer, screenwriter, and television producer.

Robert kirkman the walking dead