Imagine if Goliath fought Goliath. Impossible, right?

Right…but we could have something even better.

Brian Shaw, the three-time (and defending) World’s Strongest Man champion, announced via his Instagram that he signed a deal to join the cast of the 2017 film Kickboxer: Retaliation. The movie is slated for a 2017 release date and will be the sequel to the upcoming film Kickboxer: Vengeance (August 19, 2016).

Shaw will add to the Kickboxer series’ already star-studded cast, which includes Mike Tyson, Dave Bautista, Ronaldinho and Hafþór Júlíus Björnsson – “The Mountain” from Game of Thrones. Though former champions Tyson and Bautista might have more world-wide allure, Thor, Europe’s Strongest Man, serves as the perfect sparring partner for Shaw.

SEE ALSO: Shaw’s Unfathomable 1140 LB. Deadlift

If the two men end up facing off in the film, which they probably will, Ali vs. Frazier, McGregor vs. Diaz and, obviously, Mayweather vs. Pacquiao, will have to watch out – because this could be the best fight of all time.

With an average size of 6’8 and 417 lbs., these two real-life giants would provide people with a matchup they could not have imagined in their wildest dreams. That is…unless “David” appears out of nowhere and slays one of the behemoths before the fight.

SEE ALSO: Brian Shaw Wins 2015 World’s Strongest Man Title