He was originally a test animal used by Jor-El during his spaceflight development project to see if his son could survive space travel, and stowed away on board the craft that ultimately saved Superman from Krypton's destruction.
Beppo turns up years after Superboy has been adopted by the Kents, and initially causes Superboy much trouble with his super-powered mischief. Eventually Superboy leads Beppo out into deep space and leaves him there so that he can't cause further trouble. Beppo later returns and encounters Supergirl, who introduced him to Krypto the Superdog and Streaky the Supercat. He went on to join the Legion of Super-Pets.
- This version of Beppo (Earth-One), including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- Beppo is also known as the Super-Monkey from Krypton.
- 30 Appearances of Beppo (Earth-One)
- 8 Images featuring Beppo (Earth-One)
- Quotations by or about Beppo (Earth-One)
- Character Gallery: Beppo (Earth-One)
Superman Family member