James Gunn on the First 'Superman' Trailer: How the Comic Book-Loving Director Is Bringing the Man of Steel Back to the Big Screen

It's a movie. It's the big-screen beginning of an entirely new franchise. It's Superman. And, ahead of the first film in the DC Universe reaching cinemas in July 2025, James Gunn's latest step into the world of superhero movies has unveiled its debut teaser trailer. Come for an initial look at David Corenswet (Lady in the Lake) as the Man of Steel, as well as Clark Kent — and at Rachel Brosnahan (The Marvelous Mrs Maisel) as Lois Lane and Nicholas Hoult (Nosferatu) as Lex Luthor. Then, also get excited about a glimpse of Gunn regular Nathan Fillion (Deadpool & Wolverine) as Green Lantern and Anthony Carrigan (Barry) as Metamorpho. Superpowered dog Krypto makes an appearance, too, and viewers will hear a familiar theme tune.

"Krypto, home. Take me home," Superman says to his trusty pooch in the sneak peek at a flick that's bringing its namesake back to picture palaces for the first time since Justice League — for the first time in eight years, then, as that's when Zack Snyder's film initially arrived in its theatrical version (Zack Snyder's Justice League, aka the Snyder Cut, debuted on streaming in 2021). Gunn's iteration of the character is seen looking bloody and worse for wear in his familiar outfit to start with, which sparks that need for help from his canine sidekick. This is a movie that isn't afraid of Superman being vulnerable, then, alongside his saving-the-world antics.

That line is a favourite of Gunn's, the filmmaker told select press from across the Asia Pacific — including Concrete Playground — at a Q&A about the feature's first footage. "There's the one really potent line to me in the trailer, that moves me, which is when he says 'Krypto, take me home' — and Krypto starts dragging Superman home. And that's, at the end of the day, what this is for me," he explained. 

"It's about bringing the innate goodness of Superman, bringing it home, bringing this character home — bringing our battered world to a brighter place of healing and bringing that home. And hopefully Superman can be a symbol of that as well. I think that this is the right time for this movie, and I'm excited about people seeing the trailer," the Super, The Suicide Squad, and three-time Guardians of the Galaxy writer/director continued. He's even more enthusiastic about audiences watching the full flick, of course, come mid-2025. "The trailer is really just about being a good representation of the film — and I think it is an authentic representation of what the film is, and I just can't wait for people to that in July."

Story-wise, the preview doesn't reveal much of the narrative. "I wanted to create a teaser trailer that gave the essence of what this movie is without giving away too much of the plot," Gunn advised. As for what viewers can look forward to from the eponymous figure, Gunn notes that "I think that we can expect a Superman who is about the compassion of the human spirit; a Superman who is about kindness, love and compassion, while also being a very strong character. So I think he is the best of humanity, even though he is an alien from outer space." 

Erik Drost via Flickr

"It's a little bit different than some of the other Superman movies — it's about Superman's external struggle, but it's also about his internal struggle. It's about who he is as a person, where he comes from, his parents — both his Kryptonian parents and his human parents — and we get to know who this guy is on a real elemental level," Gunn also shared.

Co-starring Milly Alcock (House of the Dragon) as Supergirl, as part of a cast that features Isabela Merced (Alien: Romulus), Frank Grillo (Tulsa King), Skyler Gisondo (The Righteous Gemstones), Wendell Pierce (Elsbeth) and, as always in the filmmaker's work, Gunn's brother Sean (Creature Commandos) as well, Superman kicks off a new franchise that Gunn is overseeing in his role as co-CEO and co-Chairman of DC Studios. Supergirl: Woman of Tomorrow is set to follow in 2026, as directed by Dumb Money's Craig Gillespie, then Clayface will release in the same year, working with a script from Doctor Sleep and The Fall of the House of Usher's Mike Flanagan.

Gunn also chatted about casting Corenswet, conveying the character's humanity, the approach to the movie's score, the DC Universe's handling of tone, how Superman stands out from the filmmaker's past superhero flicks, the new versions of Lex Luthor and Lois Lane, and more.

On How Corenswet's Superman Differs From Past Versions of the Character — and What the Actor Brings to the Role

"David both has that optimistic boy scout quality that Superman has, both on-screen and in real life, frankly, and a real down to earth-ness — besides the fact that he's this incredibly good-looking guy, he doesn't have any sort of arrogance or ego in that way. But also he is a really phenomenally trained actor who went to school at Juilliard and is just one of the best actors I've ever worked with. Incredibly nuanced, incredibly questioning all the time, trying to figure out how can he give his best performance. 

There's never a take I look at after the dailies where I go 'he isn't fully authentically Superman'. He is Superman every moment he's in the movie. Even the stuff that, where I'm cutting together the best performance as possible, even his worst is still great …

I said to David when he got hired — he went through a very, very long and arduous audition process in which hundreds and hundreds of people auditioned for the role of Clark Kent/ Superman. David won it, and I said to David, I said 'you've got to work on two things. You've got to work on your shoulders, and you've got to work on your vulnerability'. And those were two things that he then spent the next six months getting bigger and also working on elements of being vulnerable on-screen, which I think was a little bit more difficult for him, as it is difficult also for Superman."

On Exploring Clark Kent's Humanity

"I think that's all the movie is about. This movie is about Clark Kent's humanity. Yes, he's an alien from another planet who's super powerful, but he is also deeply, deeply human. He has emotions and feelings. And every day he wakes up and tries to make the best choices he can, and sometimes he fails. 

And that's what this movie is about. This is about a complex character. And I think that's the thing that audiences are going to be completely surprised by, they can't really see in the trailer, is these complex relationships between Clark and Lois, and Lex and Clark, and how they interact and the different values they have, and how they strengthen each other and make each other weaker."

On the Approach to the Film's Score — and the Iconic Superman Theme

"John Murphy [The Suicide Squad, Guardians of the Galaxy Vol. 3] is the guy who composed the score. He's an incredibly talented guy who I love working with, with a great spirit. As soon as I finished the script — he was one of the first people I gave the script to — I said 'start thinking of music'. I said: 'the one thing I'll say is I do want to use the classic Williams score, but I want you to turn it and mutate it, and turn it into your own thing that'll represent this film and this story'. 

So there's a very powerful thing about it. There's also a slightly melancholy thing about it. And I think those are both parts of this very emotional and touching story that we're telling through the movie. And John not only wrote that theme, but he put together so much music for the movie that we then play on set and shoot to, so that we know exactly what the score is. And that score is baked into the movie.

This was a very different movie because music is always very important to me, but a lot of times I've used a lot pop songs of various types throughout the movie, and this is not the case for Superman. This is basically about the score, and so it has an incredibly important role in this film.

I can't wait for people to hear the whole thing, because it does go into that whole Williams thing, and then it transforms into something else, and then it becomes something else again. And it is a stunning piece of music."

On How Audiences Can Expect the New DC Universe, and Superman Within It, to Navigate Tone 

"Well, the one thing they can expect from the DCU is that every film and TV project will have its own vision. And some are going to be family-oriented, like Superman. Other ones are going to be a little bit more adult-oriented, like Creature Commandos, which is now playing here in the States and in some other places, a lot of other countries. And so they're all going to be very different. 

But I do think that in Superman, it's interesting because it's not as if there's not a lot of darkness in the film. I think to be truly optimistic, and to truly be hopeful, if everything's going great and everything is perfect, it's a lot easier — then Superman isn't as strong of a character. 

So this isn't Superman dealing with hope and optimism in light times. He's dealing with hope and optimism in very difficult, hard times, dark times. And that's what the movie is facing. "

On How Gunn's Work on Superman Differs From His Past Superhero Movies

"I think it's very different. I don't think of Guardians or The Suicide Squad, really primarily as comedies, but certainly comedy was a big part. And it's not that there's no humour — there's plenty of humour in Superman — but at the core of it, it really is something different. It's a different sort of story. 

And it's vulnerable for me to make that, because the honest truth is when I make a movie, and then you show the movie to an audience, you've got to sit with an audience watching the movie, and the easiest way that you know people like your movie is when they're laughing — or if you're telling a horror movie, if they're screaming. And then also if they're crying, which I got a lot of people to do with the last Guardians movie. 

So I like those external things, and then in this one I really had to be sort of strict with myself when I was writing it, filming it. It's all about the character. It's about the action, which is a big deal, shooting flying in a different way. And so it's just tonally different from the movies that I've done in the past."

On Why Superman's Red Trunks Are Back

"There was a time when I was developing the costume, the outfit — uniform is the macho way to say it, the Superman uniform — with David Corenswet and Judianna [Makovsky, a Guardians of the Galaxy alum], our costume designer. And I came in and it was coming together, but it had the red trunks, it had the whole thing, and we really went back and forth a lot about the red trunks. 

I even talked to Zack Snyder about it. He's like 'I like tried a billion versions, but the trunks, it just never got there'. And I see how that's the case. I don't know about the trunks, and I wanted to use the trunks but I couldn't, I kept taking them off. And I come in, it's very colourful, the trunks are on and I'm like 'oh god, I don't know. It's just so colourful. David, how do you feel?'.

He's like 'I love it'. And I'm like 'really, that colourful?'. He's like 'I'm an alien from outer space who can fly and lift buildings and I shoot laser beams out of my eyes that can dissolve things. I want kids to not be afraid of me. So what am I going to wear?'. 

I think that was really part of where the costume came from. And I saw the character in a new way. This was before we started shooting, of course, and this showed me how David Corenswet really took everything, every moment, very seriously in all of his choices of what he would do. And he wants to not be scary to kids. 

I thought that that was a a pretty cool thing that really I've kept in mind for the character ever since that moment."

On Superman's Latest Battle with Lex Luthor

"One of the things that was really important to me was to make a Lex Luthor who was absolutely his Superman's equal. Maybe more than — you've got to be scared of [Lex]; this Lex is scary. And it's not just because he is a bad guy, because he's pretty bad, but he has his reasons for thinking what he thinks, which you get into, and it's a lot of ideological things about what Superman represents versus what he represents as the world's most-intelligent man. 

And so I think that it really is this battle of ideologies between the two of them and how they look at the world. One of them is very generous in his point of view, which is Superman, and one of them is not very generous in his point of view, which is Lex.

But also his intelligence and his way of dealing with the henchmen that Lex has around makes him incredibly dangerous to Superman. And when you're willing to fight and there are no rules, you always have an upper hand over the person who's willing to fight and has a lot of rules, such as Superman."

On Rachel Brosnahan's Version of Lois Lane

"I think Lois is a journalist of the highest order. She believes in the truth pretty much at almost any price. And that makes her a real force to be reckoned with. And one of the things, I love the romance between Lois and Superman in the original Donner film [1978's Superman starring Christopher Reeve], and think it was really beautiful, but also in a way, it was a little bit Lois 'goo-ga' over Superman, right? Because he flies around, he can pick up planets — pick up buildings at least.

I wanted to really see 'why does Superman love Lois so much?'. And so from the beginning we did chemistry reads with Superman and Lois, and David and Rachel got these roles not because they were just individually great as those characters, but together as a couple they bounced off of each other in an incredibly dynamic way. 

I think you know from the very beginning, you start to see why she is as strong of a force as Superman is, just in a different way — and why someone as cool and as good-looking and powerful as Superman would be in love with her, and he's the one who's lucky."

On the Challenges of Rebooting a Superhero That Almost Everyone in the World Knows

"I think the biggest challenge is that because everyone in the world knows who Superman is and where he came from, some of that's a benefit. We don't go into origin stories in this. Everybody knows, practically everybody knows, that Clark Kent came here in a rocket as a baby sent by his Kryptonian parents, and a farm couple adopted him and brought him in. So we don't have to go through all that. That's a benefit in a way.

But also so many people in this world are so intimately attached to Superman, Batman, Wonder Woman, the big three, they have specific ideas about what that character is to them. Most people have come up to me and say 'I never really related to Superman because he's just too powerful. I can't. I relate to Batman because he's like the underdog, right? I never related to Superman because he's just too powerful'. 

So that's something I took into account from the beginning, that a lot of people don't relate to him. I think it's a little bit to do with what we see at the beginning of the trailer — the beginning of the movie, too.

And other people like Superman because he can punch planets in half. That is not really this Superman. But that's also, you've got to deal with all these different people have different ideas of what Superman is supposed to be. And you have to deal with all of them and hopefully people are able to go and say 'well, okay, I like my idea of what Superman is, let's see what this idea of Superman is. Let's sit down for two hours, watch this movie and see what it is'. 

I think that's what you've got to do with the DCU, because things are going to keep changing, evolving, characters aren't going to be the same as people imagine them. A lot of people keep telling me 'oh my god, you made this trailer just for me, I can't believe it'. And other people are going to feel differently about it, but they can still enjoy the story and enjoy how our view of Superman is, or whatever other DC character there is."

Superman releases in cinemas Down Under on Thursday, July 10, 2025.