>He was Jor-El's lab monkey. He was super-baby's super-pet.
Krypto was part of the established story line. Beppo was presumably introduced solely as an idea that never really took off?
yes and no, he was introduced later in the 1950's, he seem more popular as the Legion of Superpets member than anything. Mostly he was involved as a type of deus ex machina in any killer ape and mad monkey on the loose story
