Ben Affleck, Will Smith, Tom Hiddleston and Eddie Redmayne were among the celebrities at the event in San Diego, where Warners Bros showcased some of the biggest films it will release in the coming months.
Batman actor Affleck, who will direct and star in a standalone movie about the Caped Crusader, was joined on stage by his Justice League co-stars including Henry Cavill, who plays Superman, and Wonder Woman actress Gal Gadot to present the film’s new trailer.
The clip shows Bruce Wayne trying to recruit a number of superheroes including Aquaman and The Flash to form an “alliance” after warning that “an enemy is coming”.
The DC Comics film, which is due for release in November 2017, is set to rival Marvel’s Avengers movies, which also feature an ensemble cast of superhero characters.
Oscar-winner Redmayne presented the latest trailer for the Harry Potter spin-off movie Fantastic Beasts And Where To Find Them, which is due out in November.
The cast of Suicide Squad including Smith, Margot Robbie and Jared Leto revealed more footage from the film ahead of its release in August.
British actor Tom Hiddleston and Oscar-winning actress Brie Larson were among the cast of Kong: Skull Island to attend the event as they unveiled the first trailer for the film.
There were also previews of Wonder Woman, The Lego Batman Movie and King Arthur: Legend of the Sword from director Guy Ritchie.
Tens of thousands of people have descended on San Diego for Comic-Con, the annual gathering of movie, television and comic book super fans. The four-day event finished last night.
Marvel unveiled new footage from a number of new superhero movies including Spider-Man: Homecoming, Guardians Of The Galaxy 2 and Dr Strange starring Benedict Cumberbatch.
The Sherlock star presented a new trailer for the film, which is an adaptation of the comic by Steve Ditko.
Cumberbatch was joined on stage by his co-stars, fellow Britons Tilda Swinton and Chiwetel Ejiofor and Canadian actress Rachel McAdams. Mads Mikkelesen plays villain Kaecilius in the movie which is set for release on October 28.
Comic-Con was treated to a look at Spider-Man: Homecoming despite the film being just 10 days into its shoot. Tom Holland stars as Peter Parker in the reboot of the web-slinger, which director Jon Watts described as a “high-school movie”.