King Goobot the Fifth is the main antagonist of Jimmy Neutron: Boy Genius and the king of Yokus. He is the older brother of Ooblar and the employer of the Yokian Fleet Commander.


Goobot rules Yokus with an iron fist.


  • King Goobot was voiced by three separate voice actors. In the pilot and series, he was voiced by S. Scott Bullock. In the trailer for the film, he was voiced by Kevin Michael Richardson. In the film, he was voiced by Patrick Stewart.
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