Giant Vampire Bats are creatures portrayed in Journal 3. The Latin name for the common vampire bat, Desmodus rotundus, is written beneath a sketch of a giant bat on the same page.


During his investigation into the Anomalous Phenomena of Gravity Falls, Ford Pines discovered the town's infestation of giant vampire bats, believing the summer heat to have drawn them from their caves. Ford was particularly unsettled by the locals' dismissal of their presence as mosquitos, noting their use of garlic necklaces rather than bug spray, and theorized the bats were sufficing human blood for cattle and sheep.[1]

There is one seen behind Grunkle Stan when he, Dipper, Mabel, Wendy, and Soos are gathered around the campfire during the theme song.

Season 1

In "Tourist Trapped," when Dipper is going through some of Journal 3's pages, their entry is briefly seen.

In "Land Before Swine," after Soos kills the fairy, their entry page in Journal 3 is seen again.

Season 2

In "Scary-oke," when Dipper finds out about the invisible ink in Journal 3, with the invisible ink it is revealed that the Vampire Bats are actually fruit bats. Over the word 'VAMPIRE' the author wrote 'FRUIT.' He sketched out a pear and grapes on either side of the bat illustration. And crossed out the eyes of the bat head drawing. Over the detailed notes he wrote a new message which is underlined.

A real one is seen in "Northwest Mansion Mystery," appearing on the front cover of the newspaper that Preston Northwest is reading. Sheriff Blubs, Deputy Durland and Dipper are on the paper too, and Dipper is seen trying to electrocute the creature.

In "Weirdmageddon 2: Escape From Reality," the page for the giant vampire bats in Journal 3 is shown when Bill's eye flashes through the journal's pages.


Opening giant bat

Possible Giant Vampire Bat

As stated in Journal 3 they have a ten feet wingspan, which is longer than the average human height of six feet. They seem to resemble a very large Common Vampire Bat. Besides the size, the only real difference is the large, hairy tuft on its head, which other vampire bats lack.


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  1. Gravity Falls: Journal 3 by Disney Book Group. July 26, 2016. Published by Disney Press. Page(s) Favorite Constellations. ISBN: 978-1484746691.


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