Brainiac (Vril Dox) is a supervillain appearing in American comic books published by DC Comics. Created by writer Otto Binder and artist Al Plastino, Brainiac first appeared in Action Comics #242 (1958), and has since endured as one of Superman's greatest enemies.
Brainiac is commonly depicted as a superintelligent android or cyborg from the planet Colu who is obsessed with collecting all knowledge in the known universe. He travels the galaxy and shrinks cities to bottle size for preservation on his skull-shaped spaceship before destroying their source planets, believing the knowledge he acquires to be most valuable if he alone possesses it. Among these shrunken cities is Kandor, the capital of Superman's home planet Krypton, and Brainiac is even responsible for Krypton's destruction in some continuities. Regarded as one of the most dangerous threats in the DC Universe, Brainiac has come into repeated conflict with Superman and the Justice League. Although stories often end in Brainiac's apparent destruction, the character's artificial consciousness is resurrected in new physical forms, some robotic and others more organic-based in appearance.