Beppo, the Super-Monkey.
I was the experimental monkey, Superboy's father, Jor-El, used to determine whether his son could survive space conditions. I stowed away in Superbaby's rocket and when it reached Earth, like him and Krypto, I gained super-powers under the yellow sun. -- Beppo, the Super-Monkey
A playful Kryptonian laboratory monkey that survives the explosion of the planet Krypton; as the result of having been launched into outer space in an experimental space capsule and ultimately landing on Earth, where, like any native of Krypton, he acquires super-powers like Superman's and becomes known as Beppo, the Super-Monkey.
Beppo wears a colorful red and blue costume modeled after Superman's and is a member of the Legion of Super-Pets. When Metropolis television station WMET-TV inaugurates its new "Our American Heroes" series with a program honoring Superman, "our greatest American hero," Beppo appears on the show along with three of the other super-pets— Krypto the Superdog, Comet the Super-Horse, and Streaky the Super-Cat—to help pay tribute to the Man of Steel (Act No. 309, Feb 1964: "The Superman Super-Spectacular!"). In April 1965 Beppo journeys through the time barrier to the mid-nineteenth century to help Superman and the other super-pets teach a well-deserved lesson to "cruel junkman" Cyrus Atwill (S No. 176/1: "The Revenge of the Super-Pets!"). (TGSB)
Beppo the Super-Monkey has appeared in the following comics
- SB No. 76, Oct 1959: "The Super-Monkey from Krypton!"
- Act No. 277, Jun 1961: "The Battle of the Super-Pets!"
- Adv No. 293, Feb 1962: "The Legion of Super-Traitors!"
- Adv No. 316, Jan 1964: "The Origins and Powers of the Legion of Super-Heroes!"
- Act No. 309, Feb 1964: "The Superman Super-Spectacular!"
- Adv No. 322, Jul 1964: "The Super-Tests of the Super-Pets!"
- Act No. 318, Nov 1964: "Supergirl Goes to College!"
- S No. 176, Apr 1965: "The Revenge of the Super-Pets!"
- Adv No. 343, Apr 1966: "The Evil Hand of the Luck Lords!"
- SB No. 142, Oct 1967: "Superboy Goes Ape!"
- Adv No. 364, Jan 1968: "The Revolt of the Super-Pets!"
- Adv No. 380, May 1969: "The Legion's Space Odyssey!"
- WK No. 3, Sep 1979: "The Last Days of Krypton"