Koko

Koko is a small simian companion connected to the Legion of Super-Heroes' era, appearing alongside Supergirl, Brainiac 5, and Imra Ardeen in 30th-century adventures. The little creature serves as an endearing animal mascot in Silver Age DC stories.

Meet Koko, a Silver Age charmer who made their DC debut in the pages of Action Comics #276 back in 1961, brought to life by writer Robert Bernstein and the legendary artist Wayne Boring. Across a remarkable span stretching all the way to 2025, this little figure has graced some of DC's most storied titles — Action Comics, Adventure Comics, and the curated DC Finest: Supergirl: The Girl of Steel — rubbing shoulders with luminaries like Supergirl, Brainiac 5, and Imra Ardeen. With six catalog appearances, two of which carry genuine key-issue weight for collectors, Koko is a compact but enduring piece of Silver Age DC history worth seeking out.