Gravity Paws versionĪ Gravity Falls series finale commercial with the Gravity Paws puppies recreating the series' opening aired during Animal Planet’s Puppy Bowl XII. In "Weirdmageddon Part 3," during the Shacktron's battle against Bill's Henchmaniacs, an extended rock version of the song featuring an electric guitar solo is used. The same version of the theme song is used in the split version of the episode known as "Weirdmageddon 4: Somewhere in the Woods." Rock version " Weirdmageddon Part 3" also uses the corrupted song and sequence, but it has the regular images for introducing Dipper, Mabel and Stan. " Weirdmageddon Part 2" uses a shortened version of the corrupted theme song and opening sequence. Bill Cipher's page is seen with a hole where Bill's picture should be, nodding to the fact that he has finally entered Gravity Falls' world. In this apocalyptic version, Dipper is the only character normally in the opening screen that still appears: he's seen as a human skeleton wearing the blue and white pine hat that appears instead of the normal horned monster skeleton, even if only as a resemblance. " Weirdmageddon Part 1" uses an opening sequence replacing every single main character with Bill and his friends. The Weirdmageddon story arc episodes use corrupted versions of the theme song, along with apocalyptic opening sequences showing the destruction and weird changes Gravity Falls suffers during the event, like an up-going waterfall or Paul Bunyan's statue coming alive, and many Bill images and references. It's 41 seconds long and plays right after the cold opening.Ī shortened version of the main title -15 seconds long instead of the regular 41- is used in episodes that are longer than usual. This is the regular main title used in every episode of season 1 and most season 2 episodes.