When he first gained his powers, Megaton Man was known as Megaton Lad and had a sidekick called Plutonium Pup, a reference to Krypto the Superdog.
Krypto the Superdog is an animated television series produced by DC Comics & Warner Bros.
Krypto, also known as Krypto the Superdog, is Superman's pet dog in the various Superman comic books published by DC Comics.