The Iron Claw viewers shocked over Zac Efron’s dramatically different appearance as they rave over the biopic: ‘What did he do to his face?’

The Iron Claw viewers in the UK gave the film rave reviews which eventually dropped six weeks after its trans-Atlantic theatrical release.

But fans are still struggling to come to terms with Zac Efron’s shockingly different appearance as Kevin Von Erich in the wrestling drama.

The film follows the tragic true story of the inseparable Von Erich brothers, who made history as the pinnacle of the world of professional wrestling in the early 1980s.

The High School Musical star stars with on-screen brothers Jeremy Allen White (Kerry), Harris Dickinson (David) and Stanley Simons (Mike).

After watching the new biopic, one viewer responded on X – formerly known as Twitter – saying: ‘I can’t get used to Zac Efron’s new face.’

Iron Claw viewers in the UK gave the film rave reviews that eventually dropped six weeks after its transatlantic theatrical release

Iron Claw viewers in the UK gave the film rave reviews that eventually dropped six weeks after its transatlantic theatrical release

Zac's appearance in the last few years has sparked rumors of surgery, but the star revealed in 2022 that his fuller jawline came after breaking his jaw in an accident.

Pictured: Zac looks more himself at the movie's November premiere

Zac’s appearance in the last few years has sparked rumors of surgery, but the star revealed in 2022 that his fuller jawline came after breaking his jaw in an accident. Seen in the new movie, shot in 2022 and 2023 (left), and at the film’s premiere in November

Pictured (L-R): Harris Dickinson, Efron, Stanley Simons and Jeremy Allen White as the Von Erich siblings

Pictured (L-R): Harris Dickinson, Efron, Stanley Simons and Jeremy Allen White as the Von Erich siblings

One viewer was so shocked by the transformation that they asked if 'it's really him?'

One viewer was so shocked by the transformation that they asked if ‘it’s really him?’

The fuller jawline also shocked fans last year when he promoted his upcoming movie, with some suspecting he had work done.

More responded after the movie’s full release by asking if ‘it’s actually him?’ And “What did he do to his face?”

“Zac Efron’s ‘roid face gives me the worst case of the uncanny valley,” added another.

Zac explained the transformation when it happened in 2021, but his wider jaw now reappears on screen because it was filmed the same year.

He revealed the bloated look was the result of the actor hitting his jaw on a granite fountain. His facial muscles grew to compensate for the injury.

However, looking past the lead’s surprising appearance, The Iron Claw was hailed as ‘an instant classic’ by viewers, who said: ‘You definitely don’t have to be a fan of wrestling to appreciate The Iron Claw.

‘What a moving, poignant and sometimes funny film that is as much about family as wrestling…

‘The Iron Claw was so good…

‘Just watched Iron Claw. Easily the best movie of 2023…

“Anyway, see The Iron Claw. It’s an instant classic.’

The Iron Claw follows the tragic true story of the Von Erich family, who made history as the pinnacle of the world of professional wrestling in the early 1980s.  Pictured: Brothers (L-R) Kevin, David and Kerry with their champion father Fritz

The Iron Claw follows the tragic true story of the Von Erich family, who made history as the pinnacle of the world of professional wrestling in the early 1980s. Pictured: Brothers (L-R) Kevin, David and Kerry with their champion father Fritz

Fritz doesn't mind that his sons know how he orders his favorites, he sees it as an incentive to make him proud.

Fritz doesn’t mind that his sons know how he orders his favorites, he sees it as an incentive to make him proud. “The rankings can always change,” he tells them

The movie was awarded a ‘certified fresh’ 89 percent Rotten tomatoes score.

The critics’ consensus says: ‘Powerfully acted and deeply sad, The Iron Claw honors its fact-based story with a dramatization whose compassionate exploration of family ties is as fierce as the action in the wrestling ring.’

Kevin was the oldest surviving son of Fritz (Holt McCallany) and Doris (Maura Tierney), whose first child died in infancy.

The clan of boys were all raised in the image of their wrestling champion father, whose signature move was the eponymous ‘iron claw’, a sort of one-handed headlock.

And his dearest wish, unequivocally expressed, is that all his sons should follow him into the ring.

One of them, Mike, is not as strong and athletic as the others. He prefers his guitar to wrestling, which is why Fritz declares him his least favorite.

Lily James stars as Kevin's (Zac Efron) sweetheart Pam Adkisson, later his wife

Lily James stars as Kevin’s (Zac Efron) sweetheart Pam Adkisson, later his wife

Viewers of the film looked past the High School Musical star's look, labeling it an 'instant classic'

Viewers of the film looked past the High School Musical star’s look, labeling it an ‘instant classic’

He doesn’t mind his boys knowing how he orders his favorites, he sees it as an incentive to make him proud. “The rankings can always change,” he tells them.

There was another son, Chris, who was the youngest, who was not included in the film as told by writer-director Sean Durkin. Variety his suicide was ‘another tragedy that the film couldn’t really withstand’.

One other character we do meet is Kevin’s Texan partner, Pam Adkisson, played by Lily James.

That couple’s family is where the story ends, with Kevin crying as he watches his and Pam’s children play soccer and pondering the sad fate of his own siblings.