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

Bas Rutten, GTA Wiki

Video Games / Ink Suit Actor - TV Tropes

TIL Bas Rutten was on the GTA IV television : r/MMA

Steam Community :: Guide :: GTA 4 - Entire Timeline Explained

What was UFC Hall of Famer Bas Rutten's role in the video game GTA 4?

Timeline (HD Universe)

Bas Rutten, Beverly Hills Film Festival

Decipher SciFi

Found this on Bas Rutten was a beast back in the day. : r/MMA

Bas Rutten reveals he was afraid to face Antonio Inoki

Billy Grey - Grand Theft Wiki, the GTA wiki