The Walking Dead creator Robert Kirkman tried to kill off Rick Grimes (Andrew Lincoln) early in the TV series so audiences would “freak out”.During a panel at San Diego Comic-Con on Saturday (July 22), the comic writer and show producer recalled how he wanted to deviate from the comic source material as much as possible during the early days of The Walking Dead series.“With Walking Dead, I was much younger and much more reckless,” Kirkman said (via Entertainment Weekly). “I was an absolute lunatic.