LAS VEGAS (AP) — The 2025 box office has been hit with a deficit. Can the James Gunn-dubbed "summer of 'Superman'" save it?

Warner Bros. showed off a diverse and starry slate of its upcoming films on Tuesday, but the night was carried on the shoulders of Clark Kent.

“I really do believe in this movie. And I do believe that there is a lack of human kindness, or at least a degradation of human kindness,” Gunn said. “This is a movie that celebrates kindness and human love.”

At the annual CinemaCon convention and trade show in Las Vegas, Gunn — the director and writer of the first film in the new iteration of the connected DC Universe — brought out its stars, who gushed over their experience making the film.

"It's a great honor to play a role that exists so clearly in the public consciousness, to the point where everyone I think, even if you haven't seen a film or read a comic, you sort of know what the Superman symbol means and you know what it stands for," said David Corenswet, adding that he hopes to "illuminate something new about the character, or even just bring the beloved character to a new audience."

Corenswet was joined onstage by Rachel Brosnahan, who plays Lois Lane, and Nicholas Hoult, who plays Lex Luthor.

“James makes a family out of every set,” Brosnahan said. “The set is full of people who want to be there, who love making these movies. And it’s such a joy to come to work every day. As many of you have probably heard from other people, it’s not always like that.”

Gunn was announced as the film's director in 2023, shortly after he and Peter Safran became co-chairs and co-CEOs of DC Studios.

“We appreciate and share your passion for this art form,” Safran told a room full of theater owners. “It’s the fulcrum of our ambitious DC Studios slate and it’s what inspired James to shoot all over the world and push filmmaking technology to its limits, to propel moviegoers out of their homes into your theaters.”

The film will be released theatrically in July amid a summer of superhero titles, including “The Fantastic Four: First Steps” and “Thunderbolts.”

In addition to “Superman,” Warner Bros. teased some of its April releases on the convention’s main stage, like Ryan Coogler’s “Sinners” and “A Minecraft Movie,” but they also looked further down the road for 2025.

In a nod to cinephiles, the studio kicked off its presentation by bringing out the stars of Paul Thomas Anderson's "One Battle After Another," including Leonardo DiCaprio and Regina Hall. The film is set to hit theaters in September.

“I’ve been wanting to work with Paul for over, gosh, almost 20 years now. He’s one of the most unique talents of our time,” DiCaprio said. “With this film, he’s tapped into something politically and culturally that is brewing beneath our psyche. But at the same time, it’s an incredibly epic movie and has such scope and scale.”

Director Joseph Kosinski and producer Jerry Bruckheimer also treated the audience to an extended sneak peak of "F1," Brad Pitt's Formula One racing drama premiering in June.

In addition to Hollywood studios and stars boasting the theatrical menus they believe will lure audiences to cinemas, the annual convention is also a time to discuss current industry debates, like how long movies should stay in theaters and the extent to which studios should get into production with streaming companies.

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This story has been updated to correct the spelling of Lex Luthor.

Rachel Brosnahan, from left, Nicholas Hoult, and David Corenswet, cast members of the upcoming film "Superman," speak during the Warner Bros. Pictures presentation at CinemaCon on Monday, April 1, 2025, at Caesars Palace in Las Vegas. (AP Photo/Chris Pizzello)

Credit: Chris Pizzello/Invision/AP

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Credit: Chris Pizzello/Invision/AP

James Gunn, left, writer, director, and producer of the upcoming film "Superman," and Rachel Brosnahan, cast member of the upcoming film "Superman," appear onstage during the Warner Bros. Pictures presentation at CinemaCon on Monday, April 1, 2025, at Caesars Palace in Las Vegas. (AP Photo/Chris Pizzello)

Credit: Chris Pizzello/Invision/AP

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Credit: Chris Pizzello/Invision/AP

Leonardo DiCaprio, cast member of the upcoming film "One Battle After Another," appears onstage during the Warner Bros. Pictures presentation at CinemaCon on Monday, April 1, 2025, at Caesars Palace in Las Vegas. (AP Photo/Chris Pizzello)

Credit: Chris Pizzello/Invision/AP

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Credit: Chris Pizzello/Invision/AP

Regina Hall, from left, Teyana Taylor, and Leonardo DiCaprio, cast members of the upcoming film "One Battle After Another," speak during the Warner Bros. Pictures presentation at CinemaCon on Monday, April 1, 2025, at Caesars Palace in Las Vegas. (AP Photo/Chris Pizzello)

Credit: Chris Pizzello/Invision/AP

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Credit: Chris Pizzello/Invision/AP