Movies rely on stunt performers to pull off everything from simple stunts like riding a horse to complex action sequences. Some stunt performers have long careers working with just one actor, while others freelance and perform in tons of different films. Here are some of Hollywood’s biggest stars with their lookalike stunt doubles!

1. Gwendoline Christie and Rory McCann in Game of Thrones.

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Remember that epic fight between Brienne of Tarth and the Hound in Season 6 of Game of Thrones?Of course you do. Well, as it happens, the actors had a little bit of help pulling off the amazing fight. Recognize Mark Slaughter?

2. Dwayne Johnson in Faster.

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The man responsible for making almost all of Dwayne Johnson’s stunts look awesome is actually his cousin, Tanoai Reed. It’s definitely a demanding job because Johnson is known for his action-packed films, which have a lot of stunts.

3. Grant Gustin in The Flash

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Grant Gustin loves to gush about his stunt double, Cody Laudan. When Laudan isn’t performing the stunts for The Flash, he appears in movies like 300 and Man of Steel.

4. Gal Gadot in Keeping Up with the Joneses.

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Gal Godot has been making a name for herself as an action movie superstar. But even Wonder Woman needs a little help sometimes. Alicia Vela-Bailey has done stunts for the actress in three different movies.

5. Finn Jones in Iron Fist.

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While Finn Jones does do a lot of the fighting on Iron Fist, he still has a stunt double, David Armstrong, for the more dangerous stuff. “He is an incredible martial artist, an incredible human being,” said Jones of Armstrong.

6. Alexander Skarsgård in Tarzan

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When Alexander Skarsgård’s dreamy stuntman, Mark Slaughter, has also performed stunts in movies like Skyfall and Captain America: The First Avenger. When he isn’t swinging through the jungle, he is a regular stuntman on Game of Thrones.

7. Chris Hemsworth as Thor

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We wish that Chris Hemsworth was actually doing all those action scenes in The Avengers movies, but the credit goes to Bobby Holland Hanton. “The training for Thor was the most intense training I’ve ever had to endure doing a movie,” said Hanton.

8. Ronda Rousey in Furious 7.

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It might surprise you that martial arts legend, Ronda Rousey, used another uncredited stunt double, Renae Moneymaker, in Furious 7, but that’s exactly what she did.

9. Scott Glenn in Daredeveil and The Defenders

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While Scott Glenn has done some of his own stunts, he owes a debt to Justin Eaton, who has been taking a beating on his behalf for years. Eaton will soon be performing the stunts for another member of the MCU in The Punisher.

10. Karen Gillan in Jumanji: Welcome to the Jungle

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The former star of Doctor Who needs not one but two stunt doubles for her role in the Jumanji reboot. We’re looking forward to seeing this one.

11. Reese Witherspoon in Hot Pursuit.

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Reese Witherspoon’s character in the action-comedy Hot Pursuit participates in car chases, fight scenes, and handles weapons. But the woman behind the action was actually Marny Eng, a Canadian stuntwoman who has performed stunts in over 100 movies.

12. Tom Hardy in Mad Max: Fury Road.

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Jacob Tomuri was the stunt double for Tom Hardy in Mad Max: Fury Road, Legend, and The RevenantAccording to Tom Hardy, Tomuri learned his lines and did some acting during Legend. He also revealed that one of their fight scenes was real!