The film is due to hit cinemas in less than two weeks but the makers of Suicide Squad were still keen to showcase more footage from the movie at Comic-Con.
Will Smith, Margot Robbie and Jared Leto were among the film's stars at Warner Bros' presentation of its upcoming blockbusters in San Diego.
In a special preview for Comic-Con, the three-minute clip showed new footage of the super villains including Jared's The Joker, Will's Deadshot and Margot's Harley Quinn.
Meanwhile, British actor Charlie Hunnam unveiled the first trailer for the film King Arthur: Legend Of The Sword.
The movie is directed by Guy Ritchie and stars Charlie as King Arthur and Jude Law as Vortigern.
Suicide Squad will be released in the UK on August 5, while King Arthur: Legend Of The Sword is set for release in March.