Gary Fields has worked as a letterer on several comic books for Marvel and Dark Horse. As an artist, he has worked on the 'Rugrats' newspaper comic, 'Teenage Mutant Ninja Turtles' at Archie comics and DC's 'Dexter's Laboratory', 'Scooby Doo' and 'Cartoon Network Presents'. For Marvel, he has done artwork on 'What If?' and 'Rocko's Modern Life'. In the 1980s, he drew 'Threat!' at Fantagraphics.