John Cena revealed his agency advised him not to play cameo role in Greta Gerwig's Barbie movie.

During an appearance on The Howard Stern Show, he shared that he remained steadfast in his decision.

The Wrestler-turned-actor opened up about crossing paths with Barbie director Margot Robbie while he was filming for Fast X, who then proposed him the idea.

Cena said, "Margot was like, ‘We’ll make you a mermaid. You’ll be in it for half a day.’ Yeah, sure.”

“But I think the perspective from an agency standpoint was, ‘This is beneath you,’ which I get that. But also to the agency’s credit, immediately they acquiesced, and I was like, ‘No we’re going to do it,’ but all they can do is offer their guidance," he added.

He further added, "They’re not ultimately making the choice, And their guidance is… ‘Truly trickle down economics from this may take you out of these lead lap slots.’ And I get all that. I’ve always operated under the philosophy that good work gets you another chance."

Despite appearing for less than a minute in Barbie, the film went on to become a massive success, grossing $1.4 billion worldwide and receiving eight Oscar nominations, including Best Picture.