The Indominus Rex was introduced in Jurassic World in 2015 as a genetically created hybrid designed to be larger and scarier than a T. rex. Its vocalizations were built by sound designers from a mix of animal recordings to sound unfamiliar and predatory. Clips of its roars were quickly ripped from trailers and the film and shared on soundboards and video platforms, where editors adopted this short version as a reusable dinosaur scream for memes, fan edits and Jurassic Park tributes.