Despite his resemblance to an Earth monkey, due to convergent evolution producing analogous species to fill similar ecological niches, Beppo is from the planet Krypton.[3] He was originally one of Jor-El's test animals. Luckily for him, Beppo decided to stow away aboard baby Kal-El's rocket to Earth and was thus saved from its destruction. Upon landing, Beppo hopped out unseen and went off on his own for some months. Beppo lived in a jungle and handled himself quite well, since as a Kryptonian monkey he had the usual array of super-powers.[4]
A Beppo toy appears in the Batman Beyond episode "Rats".
Beppo appears in Krypto the Superdog #6.[8] This version previously lived in Africa after landing on Earth, but was ostracized by other animals. After encountering Krypto, Beppo comes to Metropolis, but unintentionally causes havoc and is taken to the 30th century to become a hero.