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Fun Fact

Underdog was called “Ultra-Puppy” in Japan due to the popularity of Ultra-man: A Special Effects Fantasy Series. The “U” on his chest also cleverly helped the name fit so they didn't have to redraw the cartoon.
Flying UnderDog T-Shirt

Flying UnderDog T-Shirt

From $49.99

Underdog Sublimation T-Shirt

Underdog Sublimation T-Shirt

From $64.99

Underdog Costume T-Shirt

Underdog Costume T-Shirt

From $49.99