Character: krypto
Krypto, also known as Krypto the Superdog, is a fictional superhero dog appearing in American comic books published by DC Comics, commonly in association with Superman. In most continuities, Krypto is Superman's pet dog, usually depicted as a white dog of a generic pedigree. Krypto is sometimes depicted as resembling a Labrador Retriever, but his specific breed is almost never specified.
Krypto has appeared in numerous cartoon television shows and films. He appeared in his first official live adaptation (excluding Smallville) on the Titans television series and is portrayed by real dogs named Pepsi, Wrigley, and Ziva throughout the series. Dwayne "The Rock" Johnson will voice the character in the animated film, DC's League of Super-Pets.
Krypto's first appearance was in a Superboy story in Adventure Comics #210 (March 1955), and was created by writer Otto Binder and artist Curt Swan. Originally intended as a one-off character, the dog attracted positive attention from the audience, and returned four issues later and became a regular member of Superboy's cast.