Original Appearances: The Ren & Stimpy Show (Nickelodeon, 1991)
Other Appearances: Ren & Stimpy comics and other merchandise.
Biography: Ren is a hot tempered, scrawny, violently psychotic Chihuahua, whose voice is an imitation Peter Lorre with a slight Mexican accent. His full name is actually Marlin T. Hoek. He is greedy, insane, delusional, violent, and insecure. When upset, he usually lashes out on best friend Stimpy by slapping him in the face or beating him up. Despite this and constantly picking on and berating Stimpy, he considers the cat a close friend. He has a Swedish cousin, Sven Hoek, who resembles Stimpy much more than Ren.
Group Affiliation: None, really, although he's been shown as being an outer-space explorer.
Miscellaneous: Ren has been voiced by John Kricfalusi and Billy West (Billy was the voice of Stimpy, too).