Have no fear, Underdog is here! The canine superhero’s trusty ring has a secret compartment filled with Underdog super energy pills to help him fight off evil. Since 1964, Underdog has been entertaining audiences while taking on villains like Simon Bar Sinister and Riff Raf.
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.