Brainiac (Vril Dox) is a fictional supervillain appearing in comic books published by DC Comics. Created by Otto Binder and Al Plastino, the character debuted in "Action Comics" #242 in July 1958. He is usually depicted as an extraterrestrial android or cyborg who serves as one of Superman's greatest enemies and a frequent adversary of the Justice League. Brainiac is known for shrinking and stealing Kandor, the capital city of Superman's home planet Krypton, and is even responsible for Krypton's destruction in some continuities.