Blue is the lead velociraptor in Jurassic World, the 2015 film that revived the Jurassic Park franchise with Chris Pratt's character Owen Grady training a small pack of raptors. Blue became a fan favourite for her intelligence and loyalty, and her distinctive call has since been clipped and shared online as a short sound effect. Creators reuse it because it is instantly recognisable to dinosaur fans and carries more character than a generic roar, so it works for both serious edits and playful memes years after the film's release.