There's no need to fear Underdog is here! And what a dog-gone treat. The canine superhero (voice of Jason Lee) protects his city against the evil machinations of mad scientist Simon Barsinister (Peter Dinklage) in this action-packed thrill ride based on the cartoon series from the 1960s. Patrick Warburton is a hoot as Simon's henchman Cad. Amy Adams provides the voice of Underdog's love interest Sweet Polly Purebred. Directed by Frederik Du Chau. James Belushi Alex Neuberger.