Adria Arjona Says Training for DC’s ‘Man of Tomorrow’ Has Been ‘Arduous,’ Cites Unfamiliar Muscle Gain

Adria Arjona said her physical preparation for DC’s upcoming Superman sequel, Man of Tomorrow, has been especially demanding, telling Deadline that she has developed muscles “that I’ve never had in my life.” The comments come as Arjona is set to appear this summer in A24’s Onslaught, positioning the actor for back-to-back high-profile projects across different major franchises.

Deadline reported that Arjona’s next role will be in Man of Tomorrow, a film described as a Superman follow-up in the DC Universe that is directed by James Gunn. The specific character Arjona will play has not been disclosed in the reporting, and neither the production’s role details nor her character name were included in the account.

While Arjona’s character remains under wraps, she characterized the training itself as arduous. In the interview, she emphasized that the work has pushed her body beyond her usual capacity, describing the outcome in terms of new muscle development. The remark, as reported by Deadline, suggested a transformation driven by intensive rehearsal rather than a simple change in wardrobe or styling.

The new DC title is scheduled as a follow-up effort to the Superman property, with the James Gunn direction placing the project within the studio’s broader attempt to recalibrate its cinematic universe. Arjona’s participation, as described by Deadline, adds a performer with a visible lead presence in Onslaught to a future tentpole that is still withholding casting specifics for the wider audience.

Onslaught, an A24 release, is described in the Deadline report as the project Arjona is working on this summer. A24’s presence indicates a different production style and audience expectation than a major DC superhero installment, and Arjona’s dual track of projects highlights the pace actors often maintain when they move between genre ecosystems and production schedules.

For viewers and industry observers, the exchange underscores how physical preparation can be treated as a story component even before plot or role details are released. The emphasis on training and the body changes Arjona described also reflects a common production requirement for action-oriented superhero roles, where choreography, stamina, and on-screen physicality are central to performance.

The next step for fans is informational rather than experiential: character and plot details for Man of Tomorrow remain unannounced in the reporting, and additional official casting or production updates would be expected as the film moves through its schedule.

In the meantime, Arjona’s immediate public-facing work continues with Onslaught, while her comments provide a glimpse into the behind-the-scenes preparation that will shape her performance in a DC Universe sequel that is still building its public briefing and release timeline.