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Brainiac
Brainiac is a supervillain from the planet Krypton who is obsessed with collecting knowledge. He is one of Superman's greatest enemies and has even been responsible for the destruction of Krypton. Brainiac is usually depicted as an extraterrestrial android or cyborg, and he is known for his shrinking ray, which he uses to shrink cities and collect them in his collection. He has also been known to steal technology and knowledge from other planets. Brainiac is a formidable opponent, and he has caused Superman and the Justice League a lot of trouble.