John Cena took on the role of Merman in the 'Barbie' movie despite an agency's suggestion against it, with Margot Robbie playing a key role in recruiting him for the film.
Key Points
John Cena went against the agency's suggestion and accepted the role
Margot Robbie played a significant role in recruiting Cena for the film
Pros
John Cena's willingness to take on a different role
Margot Robbie's involvement in recruiting Cena
Cons
Agency's initial discouragement of Cena taking the role