Chewbacca is the Wookiee co-pilot from the Star Wars films, famous for his expressive growls and roars rather than spoken dialogue. Sad Chewbacca clips spread online through soundboards, reaction videos and meme edits because the character is instantly recognizable and the emotion is clear even without context. Creators keep using this sound when they want a quick way to signal grief, disappointment or melodramatic loss in a familiar movie voice.