Robert Wall, a martial arts master who performed alongside Chuck Norris and Bruce Lee, has died at the age of 82.
The star studied Karate and Tang Soo Do - the latter in which he was a ninth degree blackbelt - and trained under Chuck, who had brought the discipline to the West.
Robert featured in hit martial arts films, including Way of the Dragon and Enter the Dragon alongside icon Bruce Lee.
He and Bruce Lee had a real fight on Enter the Dragon, which resulted in Robert breaking his ribs.
The martial arts master admitted years later how Bruce Lee said: "Bob, I wanna hit you, and I wanna hit your hard,” in a bid to make the scene look as authentic as possible.
He also revealed in 2017 that he had to fall on real glass during the scene, which was shot five or six times.
Robert also starred alongside his training and business partner Chuck in films such as Game of Death, Code of Silence, Firewalker and Hero and the Terror.
He won the US professional Karate Championship in 1970 and was the co-founder and CEO of Black Belt Inc.
His family said in a statement to TMZ : "Bob was the greatest husband and father. Family was Everything to him.
"He lived a remarkable life & There is a hole in our hearts that will never be filled. His spirit & legacy will live on forever within us. He was our rock."
No cause of death has been revealed as of yet.
Friends and followers of the star took to social media following the news to share messages of condolence.
One Twitter user simply wrote: "RIP Bob Wall !!" before tagging the late Bruce Lee's account in their post.
Another penned: "May da Almighty God judge u fairly..ROBERT WALL #RIP"
And a third also wrote: "RIP," alongside a praying hands emoji.