The Skeksis are the corrupt, bird-like rulers in Jim Henson's fantasy film The Dark Crystal, first released in 1982, and they returned in the later prequel series. Their croaking voices and scheming manner made them memorable villains long after the film, and short clips of their noises began circulating on meme soundboards and in edited videos. The drawn-out hum works on its own because listeners instantly read it as villainous delight, which keeps it useful for reaction edits and dark comedy years later.