Chewbacca is the Wookiee co-pilot from the Star Wars films, first appearing in Star Wars in 1977 alongside Han Solo. His vocalizations became one of the franchise's most recognizable character sounds, widely reused in fan edits, reaction videos and soundboards. Online, people use the roar because it conveys strong emotion without needing dialogue, making it easy to drop into memes, streams and short-form comedy. Its lasting popularity comes from how instantly recognizable Chewie sounds, even in a very short clip.