The plot arc was so popular, though, it wasn't long before Krypto returned, again and again, romping regularly though a variety of Superman and Superboy comic book exploits. The origin story ...

Kal-El learns that this dog, named Krypto in the letter, was a pet who lived within the House of El. As a baby, Clark was too young to remember Krypto. While still a puppy, Jor-El sent Krypto into ...