While his chiseled physique and sapphire blue eyes remained some of his more striking features, social media users did a double take as a recent photo of him looking beefed up on the set of his latest film made the rounds on the internet.
The 35-year-old is currently filming for his new movie, The Iron Claw, in which he plays one-time world champion wrestler, Kevin Von Erich of the Von Erich professional wrestling family from Texas.
Efron's impressive transformation for the role made him nearly unrecognizable.
Would you still recognize him?
@HeelWillMahoney/Twitter
The photo of Efron sporting a bowl cut, shirtless, and wrapped in a towel while checking his phone, was taken from the Louisiana set.
And it had Twitter buzzing.
\u201cI wasn't sure how Zac Efron was going to pull off Kevin Von Erich....\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201cZac Efron came out here looking like sexy Ned Flanders\u201d— Meech de Lioncourt \ud83e\udd87 (@Meech de Lioncourt \ud83e\udd87) 1666750855
\u201cZac Efron as Kevin Von Erich in the first set photos from The Iron Claw. \n\nWhat do you think?\u201d— Ryan Satin (@Ryan Satin) 1666752086
Those who remembered what Kevin Von Erich looked like compared notes.
\u201c@HeelWillMahoney No question about his physique/physical fitness. But Efron's face looks like he's close to 50. Factor out the fact he's only like what, 5'8 when Von Erich was like 6'3 - 6'4, and I'd say he's pretty good!\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@theashleyray This looks like what they are going for. My first reaction seeing it was its Kerry's upper body with Kev's haircut.\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@Kenton_la He's honestly probably more jacked than Kev was!\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@HeelWillMahoney Body looks huge but he is still a foot short\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@HeelWillMahoney he needs to stop skipping leg day\u201d— Will Mahoney (@Will Mahoney) 1666740513
The film is poised for drama as the real-life Von Erich family was mired in successive tragedies which led to a widespread myth that the family was cursed.
A wrestler himself, the family patriarch, Fritz Von Erich–whose real name was Jack Adkisson and adopted the stage surname to portray himself as a villainous German Nazi–died of cancer at the age of 68 in 1997.
Five of his six sons predeceased him.
His firstborn, Jack Jr. died from drowning in a puddle after an accidental electric shock at age six; David Von Erich died from enteritis at 25; and Mike, Chris, and Kerry Von Erich all committed suicide at 23, 21, and 33 years of age, respectively.
Effron plays the last surviving Von Erich son, Kevin, who is 65 today.
Some people thought Efron would've been better suited to portray Kerry Von Erich, who is being played by Jeremy Allen White.
White currently stars in the Hulu drama series, The Bear.
\u201c@HeelWillMahoney I really wanted him for Kerry Von Erich when it was announced, thought he had a great build to portray him. Then Jeremy Allen White as Kevin Von Erich, not just physically, but he is also the best actor of the three, at least in my opinion.\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@HeelWillMahoney The body looks a lot more Kerry than Kevin.\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@HeelWillMahoney More like Jacked Efron.\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@HeelWillMahoney He looks bigger than Kevin tbh, must be shooting for that Kerry understudy in case that guy from shameless gets injured lol\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@HeelWillMahoney My concern is his height. Kevin is way taller\u201d— Will Mahoney (@Will Mahoney) 1666740513
\u201c@HeelWillMahoney That is how I remember Kevin. Many people commented on how Zac looks more like Kerry but they should look at older pics of Kevin when he was Jacked\u201d— Will Mahoney (@Will Mahoney) 1666740513
After the rigorous training he endured for 2017's Baywatch, Efron said he wanted to try a different apporach to training for his newest film.
He told Men's Health:
"That Baywatch look, I don't know if that's really attainable"
"There's just too little water in the skin. Like, it's fake; it looks CGI'd. And that required Lasix, powerful diuretics, to achieve."
"So I don't need to do that. I much prefer to have an extra, you know, 2 to 3 percent body fat."
He added:
"At one point, that was a dream of mine — what it would be like to not have to be in shape all the time? What if I just say, 'F--- it' and let myself go?"
"So I tried it, and I was successful. And for all the reasons I thought it would be incredible, I was just miserable. My body would not feel healthy; I just didn't feel alive. I felt bogged down and slow."
\u201c@HeelWillMahoney Dudes an Adonis he can do whatever he wants\u201d— Will Mahoney (@Will Mahoney) 1666740513
The Iron Claw is directed by Canadian film director, screenwriter and producer Sean Durkin.
There is currently no official release date.