Who plays Atom Smasher's uncle in Black Adam? That surprise cameo explained

Noah Centineo as Atom Smasher in Black Adam
(Image credit: Warner Bros./DC)

Black Adam introduces the Justice Society of America, made up of Pierce Brosnan's Doctor Fate, Aldis Hodge's Hawkman, Quintessa Swindell's Cyclone, and Noah Centineo's Atom Smasher. They go up against Dwayne Johnson's titular Black Adam, the champion of Khandaq who's been asleep for millennia. 

But, it turns out Atom Smasher isn't the first incarnation of the hero – that honor goes to his uncle, who we meet in the movie in a quick cameo. You might recognise the actor playing Uncle Al, though. We've got the lowdown on that cameo right here – but be warned that there are Black Adam spoilers below, so turn back now if you haven't seen the movie yet! 

Who plays Atom Smasher's uncle in Black Adam? 

Henry Winkler in Barry

(Image credit: HBO)

When we're introduced to Centineo's Atom Smasher, real name Al Rothstein, he's on FaceTime with his uncle, the original Atom named Uncle Al. But who's that on the phone screen? It's none other than Henry Winkler, who famously played the Fonz in Happy Days. You might also recognize him from his roles in Barry, The French Dispatch, Arrested Development, and many, many more films and TV shows. 

In the comics, Al Pratt is actually the godfather of Al Rothstein rather than his uncle, and he also went by the superhero name Atom. 

Sadly, Uncle Al doesn't have a bigger role than this one, brief cameo. Instead, his nephew takes the reins as Atom Smasher, though he's still got a lot to learn when it comes to being a hero. Al Rothstein also wears his uncle's Atom Smasher super suit in the movie.


For more on Black Adam, be sure to read our explainers on:

Molly Edwards
Senior Entertainment Writer

I'm a Senior Entertainment Writer here at GamesRadar+, covering all things film and TV for the site's Total Film and SFX sections. I previously worked on the Disney magazines team at Immediate Media, and also wrote on the CBeebies, MEGA!, and Star Wars Galaxy titles after graduating with a BA in English. 

Read more
The comics Copperhead and the MCU Copperhead.
Captain America: Brave New World – Meet Copperhead, a twist on the Marvel Comics villain played by a former Game of Thrones star
Daredevil: Born Again
Daredevil: Born Again episode 4 finally revealed the Marvel show's most mysterious character so far
Spider-Man in the Your Friendly Neighborhood Spider-Man finale
Your Friendly Neighborhood Spider-Man finale brings back fan-favorite Spidey voice actor for a perfect cameo in another role
Captain America: Brave New World trailer
Captain America: Brave New World cameos and Easter eggs: all the Marvel references you might have missed
Superman
Gen V star reveals he unsuccessfully auditioned for Superman and Homelander
Captain America: Brave New World
Giancarlo Esposito confirms he was originally set to play Marvel's King Cobra in Captain America: Brave New World: "It was a bit of a whirlwind"
Latest in DC Movies
James Gunn
James Gunn reacts to Jason Momoa almost spoiling his Lobo costume in an interview: "I just want to profoundly thank Jason’s publicist"
Jason Momoa next to Lobo
Jason Momoa has gone method taking on the role of Lobo: "I asked everybody to call me by my character's name"
Batgirl movie
Unearthed Daredevil-like fight scene from DC's canceled Batgirl movie gives us a taste of what we could have had
Jason Momoa in A Minecraft Movie
Jason Momoa says the DCU's Lobo is "exactly like" the comic book character in upcoming Supergirl movie
Guy Gardner Green Lantern in Superman
Nathan Fillion says his version of Green Lantern in James Gunn's Superman is "a jerk": "He's not nice, which is very freeing as an actor"
Zack Snyder's Justice League
Zack Snyder celebrates 4 years of the Snyder Cut of Justice League: "Still humbled by the fact that this exists at all"
Latest in News
Silent Hill f screenshot showing the protagonist
Silent Hill f hasn't actually been banned in Australia, but it's not out of the woods yet
Charlie Cox in Daredevil
Daredevil star Charlie Cox says keeping his Spider-Man: No Way Home cameo a secret for two years was a "nightmare"
Disney Twisted-Wonderland the Animation
After four years, Disney's anime show based on hugely popular gacha game gets a proper trailer
Assassin's Creed Shadows
As Assassin's Creed Shadows overtakes Valhalla and Odyssey, Ubisoft promises "this is just the beginning" in heartfelt thanks to players
Dante in Netflix's Devil May Cry
Netflix unveils a stacked anime trailer filled with hits like Sakamoto Days and upcoming releases like Fire Force and Moonrise
Jujutsu Kaisen
After no big Jujutsu Kaisen announcements on a week packed with anime news, fans are now convinced season 3 is skipping 2025