Hafthór Júlíus Björnsson, better known as Ser Gregor Clegane, “The Mountain That Rides” of Game of Thrones acclaim, is most famous for [SPOILER ALERT] crushing the skull of fan favorite Oberyn Martell on screen during Season 4 of HBO’s hit show. What the man did in real life recently, however, is far more impressive.

Björnsson just broke a 1,000-year-old Viking strength record by carrying a 1,433-pound log for five steps. The last man who attempted this feat reportedly broke his back.

The Mountain won the Iceland’s 2011 Strongest Man contest and placed second in the 2014 World’s Strongest Man contest. Obviously, he is one of the favorites to win in 2015.

Wondering about some other world-famous strongmen who graced the world of film and television? Here are three.

Lou Ferigno

Ferigno is a former IFBB Mr. America and two-time IFBB Mr. Universe winner whose greatest contribution to the entertainment world was a five-year turn from 1977 to 1982 as the one and only Incredible Hulk.

Arnold Schwarzenegger

Schwarzenegger won Mr. Universe at just 20 years old, and went on to win Mr. Olympia a whopping seven times. He parlayed his tremendous physique and equal charisma into a lucrative acting career that saw him portray a number of iconic roles.

Schwarzenegger has starred in three Terminator movies, two Conan films, portrayed Hercules, starred in Predator, literally defeated Satan in The 6th Day, appeared in three Expendables movies, and attempted to freeze all of Gotham City.

Joanie Laurer a.k.a. “Chyna”

The former WWE superstar was a dominant Women’s champion as well as Intercontinental champion during her wrestling tenure, and she also had another contribution.

Chyna suffered a breast implant rupture during a match, and had custom-made implants put in as replacements. The design has since been used for women with large frames, as well as female bodybuilders.

Outside the ring, Chyna has been on the reality TV show The Surreal Life, as well as some adult film videos such as: 1 Night in Chyna, Another Night in Chyna and Backdoor to Chyna. She has also appeared in two Avengers-themed pornographic films as “She-Hulk.” She also became infamous for a leaked sex-tape involving her and fellow WWE star/D-Generation X stablemate Sean "X-Pac" Waltmann.