Brainiac is a machiavellian and malevolent being who serves as the supreme ruler of the new Kryptonian Empire, where, following after he destroyed Krypton for invoking peace treaty, took complete control and has been using derelict warships and technology from what remained of the fallen and manipulated it to conquer the rest of the universe. He's also Clark Kent/Superman's arch nemesis. He is also the "father" of Kara Zor-El, who he was brainwashed into serving him after wiping out her family.