Welcome to Animation Shop’s Underdog t-shirt section, where you can find Underdog items that celebrate the show and all its characters, including Sweet Polly Purebred, Simon Bar Sinister and Riff Raff. Animation Shops offers shirts that feature Underdog in a number of different posses along with the classic Underdog, "U" symbol. So there's no need to fear, Animation Shops is here! With the coolest Underdog gear. If you're a fan of classic cartoon, then Animation Shops is sure to have the perfect Underdog t shirt for you - and we are always adding new styles, so check back with us often!