Gilbert Shelton (born May 31, 1940, Houston, Texas) is an American cartoonist and underground comix artist. He is the creator of The Fabulous Furry Freak Brothers, Fat Freddy's Cat, Wonder Wart-Hog, Philbert Desanex, and Not Quite Dead. He later did the cover art to The Grateful Dead's 1978 album, Shakedown Street. He also did the cover of the early classic computer magazine compilation "The Best of Creative Computing Volume 2" in 1977.