The Indominus Rex was introduced as the main antagonist of Jurassic World, released in 2015, a genetically modified hybrid dinosaur created for the park's new attraction. This roar comes from the scene where it attacks the gyrosphere carrying Zach and Gray, a sequence that became one of the film's most memorable set pieces. Since then, the sound has circulated widely on soundboards and in fan edits, where its size and ferocity make it a shorthand for an unstoppable movie monster, even for viewers who have not seen the full film.