Sourpuss is a Terrytoons character. He is a cat who is often irritated by Gandy Goose's antics. Despite that, Sourpuss really cared for him.
His debut was in the 1939 short The Owl and the Pussycat which is Terrytoons' second adaptation of the 1871 poem of the same name by Edward Lear as there was a 1934 short which had Farmer Al Falfa in it. He started being paired up with Gandy Goose in the 1939 short Hook, Line and Sinker. He has three other solo appearances: 1940 short How Wet Was My Ocean and the 1941 short Fishing Made Easy in where he was paired up with a character called Oscar the Timid Pig and the 1942 short A Torrid Toreador. His last theatrical appearance was in the 1950 short Dream Walking. He was originally voiced by composer and orchestral arranger Arthur Kay (1881-1969) from 1939-1940. He was later replaced by Terrytoons writer Tom Morrison. Sourpuss' voice was an impersonation of comedian Jimmy Durante.
His latest appearance was in Mighty Mouse: The New Adventures in where Mighty Mouse rescues Sourpuss from a cat gang and he then reunites with Gandy Goose. Sourpuss and Gandy are also implied to be in a romantic relationship. In their second appearance Mighty's Wedlock Whimsy, Sourpuss and Gandy are shown to be showering together. They also both play "cupid" for Mighty and Pearl Pureheart.
- The Owl and the Pussycat (January 13, 1939)- color remake of a 1934 Farmer Al Falfa short
- Hook, Line And Sinker (September 9, 1939)
- The Torrid Toreador (January 9, 1942)
- Sham Battle Shenanigans (March 20, 1942)
- Lights Out (April 17, 1942)
- Tricky Business (May 1, 1942)
- The Outpost (July 10, 1942)
- Tire Trouble (July 24, 1942)
- Night Life In The Army (October 12, 1942)
- Scrap for Victory (January 22, 1943)
- Barnyard Blackout (March 5, 1943)
- The Last Round Up (May 14, 1943)
- Mopping Up (June 25, 1943)
- Somewhere In Egypt (September 17, 1943)
- Aladdin's Lamp (October 22, 1943)
- The Frog And The Princess (April 7, 1944)
- The Ghost Town (September 22, 1944)
- Gandy's Dream Girl (December 8, 1944)
- Post War Inventions (March 23, 1945)
- Fishermen's Luck (March 23, 1945)
- Mother Goose Nightmare (May 4, 1945)
- Aesops Fables: The Mosquito (June 29, 1945)
- Who's Who In The Jungle (October 19, 1945)
- The Exterminator (November 23, 1945)
- Fortune Hunters (February 8, 1946)
- It's All In The Stars (April 12, 1946)
- The Golden Hen (May 24, 1946)
- Mexican Baseball (March 14, 1947)
- The Chipper Chipmunk (March 9, 1948)
- Dingbat Land (February 1, 1949)
- The Covered Pushcart (August 26, 1949)
- Comic Book Land (December 23, 1949)
- Dream Walking (June 9, 1950)
- In The Owl and The Pussycat, he was originally named George.
- A dog character who is similar to Sourpuss appears in the 1939 Gandy Goose short The Hitchhiker.
- Sourpuss is one of the only characters who never appeared in the 1999 pilot Curbside. This was presumably done to avoid comparisons to Ren and Stimpy.