Fremulon is the production company of Dan Harmon, the co-creator of Rick and Morty, and its animated logo card closes nearly every episode of the Adult Swim series that premiered in 2013. The brief warbly sting attached to the card became familiar to millions of viewers through end-credit sequences. Fans began ripping the audio and reusing it online as a tongue-in-cheek sign-off, a way to give any chaotic clip the feel of a real television episode ending. Its cult status comes straight from the show's massive meme culture.