R2-D2 is the astromech droid from the Star Wars film series, famous for communicating through expressive beeps, whistles and alarm-like cries rather than words. His screams became widely reused online because they instantly signal panic in a way that is recognizable even outside the movies. The clip shows up in reaction edits, fail compilations and absurd meme videos, often alongside a classic scream meme or other exaggerated sound cues. Its staying power comes from how readable and playful the sound is.