Charles Marshall was a comic book writer who contributed material to the Planet of the Apes comic book series by Malibu Graphics. Adventure Comics, a subsidiary of Malibu Graphics, had numerous separate Planet of the Apes projects on line, all under the creative guidance of Marshall. Besides being a successful copywriter, he penned a syndicated newspaper column and had worked for various comic book companies. Marshall began his tenure amongst the Apes when Adventure Comics Creative Director Tom Mason gave him a shot at pitching concepts for the title. Mason was so impressed with his ideas that Marshall was put in charge of the monthly title as well as a four-issue spin-off mini-series, Ape City. These in turn led to a raft of spin-offs such as A Day on the Planet of the Apes and Ape Nation.