Charles Knauf is a published writer of comics and wrote the 2008 run of The Eternals, collaborating with his father, Daniel Kanuf. Previously, the father-son team worked on the 2005 run of Iron Man, and the Captain America one-shot "Theater of War". He considers Jack Kirby to be one of his influences.
Charles got involved in comics after being approached with his father to work on what would become their first Iron Man run.
In 2008 Charles and Daniel were set to start another run on the Eternals, but that appears to have fallen through.