Underdog is a 2007 American live-action/animated superhero comedy film based on W. Watts Biggers, Chet Stover, and Joe Harris‘ 1960s animated television series, which in turn is a spoof on the DC Comics character Superman, created by Jerry Siegel and Joe Shuster. Directed by Frederik Du Chau and written by Joe Piscatella, Adam Rifkin, and Craig A. Williams, the film stars Jim Belushi, Peter Dinklage, John Slattery, and Patrick Warburton with the voice talents of Jason Lee, Amy Adams, and Brad Garrett. Unlike the TV series, the Underdog character is portrayed as a regular dog rather than an anthropomorphic one. Underdog/Shoeshine, voiced by Jason Lee, was played by a lemon beagle named Leo sporting a red sweater and a blue cape.

The story follows a diminutive hound named Shoeshine, who gets superpowers after a lab accident. When he's adopted by a 15-year-old boy, the two form a bond around the shared knowledge that Shoeshine is really Underdog. The film grossed $65.3 million worldwide and received generally negative reviews from critics.