Bas Rutten, GTA Wiki

Sebastiaan "Bas" Rutten is a voice actor and character who appears in Grand Theft Auto IV, Episodes from Liberty City, and mentioned in Grand Theft Auto: Chinatown Wars. He is a real life former Dutch UFC Champion and helped with motion capture of Niko Bellic's fighting during the making of Grand Theft Auto IV. Bas was in the movie "Here Comes The Boom", a comedy where he plays a character named Niko, which the film's director admitted was a reference to Niko Bellic. Bas has openly admitted that

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