He is an acclaimed comic book talent best known for his series, "Warlord" and "Green Arrow: The Longbow Hunters" and the following "Green Arrow" ongoing series for DC Comics and "Jon Sable: Freelance" for First Comics.
In addition to the comics listed, Grell is also well known for being the creator-writer-artist of "Starslayer: The Log of the Jolly Roger" for First Comics.