Centineo stars in the Johnson-led DC film as one of the core members of the Justice Society of America, Atom Smasher — a role he was tapped to play in 2020. His character's powers include being able to control his molecular structure by way of manipulating his size, strength, and durability. But in an interview with Screenrant, Centineo noted that his version of Atom Smasher is vastly different from the one in the DC Comics. "In the comic books, he's a fully formed superhero, right? He's an adult. In this movie, though, he's kind of a young man," he said. "He's a young metahuman that gets to, for the first time, take that first step into what it means to be a superhero. He comes from a pedigree of superheroes, and his grandfather was actually a super villain, but not by choice. He was kind of forced into it, and he did rectify it in the end. . . . You get to really see that transitional phase, which I don't think you get to see often."
