The Indominus Rex is the genetically engineered hybrid dinosaur created for Jurassic World, the 2015 film in the Jurassic Park franchise, where it serves as the park's main attraction turned escaped predator. Its roar was designed to sound like a blend of several large animals, giving the creature a distinct and unsettling voice unlike the franchise's earlier dinosaurs. Since the film's release, the clip has circulated on soundboards and in fan edits, where creators reuse it as shorthand for a massive, unstoppable monster reveal.