The giant eyeball is a supernatural being encountered by an elderly couple around 30 years ago.
History[]
The eye somehow ended up in Lake Gravity Falls 30 years before the events of the series, wherein it surfaced shortly afterwards and was then spotted by an elderly couple. The couple panicked, ran away and had their memories erased by the Blind Eye Society; after the erase, they were no longer panicked. This all occured in a flashback within the episode "Society of the Blind Eye."
Appearance[]
The giant eyeball is a seemingly disembodied eyeball of huge proportions. It has a light-colored iris.
Possible explanations[]
In the Gravity Falls shorts, there was a short called "Tooth", in which Dipper and Mabel try to discern why there is a giant tooth on the beach. They are then chased by a giant head-shaped island. Additionally, in the real-life edition of Gravity Falls: Journal 3, The Author notes that one of the islands in the lake changes positions every day, and wonders if it is a giant head. This could mean that the giant eyeball comes from the Island Head Beast.
Sightings[]
Season 2
- 207. "Society of the Blind Eye" (flashback)