Watch “Fantastic Four” actors John Krasinski and Chris Evans team up for hilarious “Late Show” sketch

Krasinski and Evans have both starred as characters from the Marvel superhero family over the years, just in different timelines.

Reed Richards and Johnny Storm look a little different in this timeline. 

John Krasinski and Chris Evans, who have both played Fantastic Four characters in separate films, teamed up for a hilarious ‘80s-themed sketch on Tuesday’s episode of The Late Show that saw Krasinski, who was recently crowned PEOPLE's Sexiest Man Alive, dishing out some ridiculous tips and tricks in order to help host Stephen Colbert become more attractive. 

However, the seemingly innocent sketch took a turn for the weird when Krasinski tasked Colbert with tracking down Evans — who was previously declared PEOPLE’s Sexiest Man Alive in 2022 — and stealing his DNA. “What the f---?” a coughing Evans yelled after Colbert's surprise swabbing. In response, the host confessed, “I need your spit to make me sexy!”

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Spit successfully obtained, Colbert returned to Krasinski’s lab, where the actor revealed that the next step in his journey would be to “extract Chris Evans’ sexy DNA using the genetics lab you built using the money you made from The Office re-runs.” 

After a quick break to sexy-ercise on a treadmill, Krasinski fed Colbert the synthesized serum from Evans’ DNA that, sadly, wouldn’t transform him into Captain America or Johnny Storm, but would hopefully make him sexier.

“Now, the transformation takes about 14 hours during which your body will try to reject every cell within it,” Krasinski gleefully explained as Colbert dropped to the ground and clawed at his throat. “Much like a butterfly, your internal organs reorganize themselves — don’t touch me — into a more beautiful and symmetrical formation.”

The Jack Ryan star then woke the sleeping Colbert to reveal that he was now sporting Chris Evans’ face. “It worked!” Krasinski cheered. “Stephen, you look amazing!” 

Colbert replied, “I feel amazing! I feel like the Sexiest Man Alive!” To which Krasinski teased, “Sure, maybe in 2022, but this year, it’s me.”

Related: John Krasinski is PEOPLE's Sexiest Man Alive 2024 — and wife Emily Blunt already has big plans

Despite both starring as Fantastic Four characters, Krasinski and Evans have never actually shared the screen together as members of Marvel’s first family because their films took place on different timelines. Krasinski starred as a version of Reed Richards/Mister Fantastic in 2022’s Doctor Strange in the Multiverse of Madness, while Evans played Johnny/the Human Torch in Fox’s first two Fantastic Four films and recently reprised the role in Deadpool & Wolverine. Evans, of course, also played Steve Rogers/Captain America for about eight years within the Marvel Cinematic Universe, too.

They aren’t the only actors who have spent time as the characters, either. Top Gun: Maverick's Miles Teller and Creed's Michael B. Jordan also played Reed and Johnny in Fox’s 2015 Fantastic Four reboot, and Pedro Pascal and Joseph Quinn are set to put their spin on the characters in Marvel’s upcoming film, Fantastic Four: the First Steps. 

Watch Reed — we mean, Krasinski — conduct his hilarious experiment in the clip above.