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Brainiac was originally an advanced supercomputer from Krypton, who became independent after the destruction of the planet. Brainiac now seeks to obtain all the knowledge of the universe, and then destroy it so as no new knowledge can emerge. When he reached Earth a human named Lex Luthor vowed to help him. He has made frequent attacks on Earth, but is always defeated by Superman, the Justice League, or the Birds of Prey.