Description:  Underdog is a 1960s cartoon series about a mild-mannered, rhyming superhero dog who transforms from his secret identity, Shoeshine Boy, to rescue reporter Sweet Polly Purebred. Created as a parody of Superman, the show features Underdog using his powers like flight, laser vision, and superhuman strength to fight villains such as the mad scientist Simon Bar Sinister and the wolf Riff Raff.

Protagonist: Underdog, a costumed canine superhero, is the secret alter ego of Shoeshine Boy, a humble shoeshine worker.

Transformation: When Sweet Polly Purebred is in danger, Shoeshine Boy ducks into a telephone booth to transform into Underdog, often destroying the booth in the process. He sometimes takes a "Super Energy Vitamin Pill" to gain strength.

Villains: Underdog's main adversaries include the evil scientist Simon Bar Sinister and his sidekick Riff Raff.

Powers: Underdog possesses powers such as flight, superhuman strength, laser vision, and x-ray vision. Catchphrases: He is known for his rhyming couplets, such as, "There's no need to fear, Underdog is here!".