Gallaxhar (voiced by Rainn Wilson) is the main antagonist of Jaden's Adventures of Monsters Vs. Aliens. Gallaxhar was seaking the most powerful substance in the universe called "Quantonium." When it ended up in the body of Susan Murphy, or Ginormica, he sent a robot prob to retrieve it. After Ginormica, Jaden and his friends destroy the prob, Gallaxhar traveled to Earth to retrieve the Quantonium himself. He obducted Ginormica and took the Quantonium from her to build his army, and conquer the Earth. But when his ship was set to self-destruct, and Ginormica took the Quantonium back, he was defeated.



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