Lefty

 is the 4th animated short of Gravity Falls to air between Season 1 and Season 2. It premiered on October 16, 2013.

Overview
Dipper sets out to discover why a certain Gravity Falls resident always faces left.

Synopsis
The short starts with the typical introduction of Dipper holding up a crude cardboard box title, reading "Dipper's guide to the unexplained #82." He then pans the camera to the subject of suspicion, whom Dipper dubs "This Guy."

Dipper reveals him to always be facing left, along with everyone else never seeing the right side of his face. Dipper pans the camera to Mabel, asking for her theories. Mabel suggests that he is either hiding an embarrassing sunburn, he's half-lizard, half-man, or mockingly, that Dipper is totally insane and "Lefty" is completely normal.

"Lefty", standing behind a counter with bowling shoes, is subjected to three tests by Dipper. Dipper first asks him to get a pair of shoes on his right side, to which he awkwardly bends backward to grab it. Dipper then conspicuously throws his wallet to the right side of "Lefty," so he takes the wallet for him, bending backward. Finally, Dipper asks him to get him his bowling ball. "Lefty" agrees, but Dipper flings him around once he goes for the bowling balls, revealing him to be a robot of some sort, populated by small, green creatures.

The small green creatures then cry "The time has come!" in varying levels of despair, and swallow red glowing cubes. They burst into flames, and the robot self destructs into a pile of ash, which sets off the smoke alarm. The short ends with Dipper and Mabel running away, as Dipper suggests burning the tape.

An odd letter appears in the static, with another cryptogram.

Cast

 * Jason Ritter as Dipper Pines
 * Kristen Schaal as Mabel Pines

Production notes

 * See also: List of allusions and List of goofs.

Series continuity

 * Mabel wears her sweater with the stripes from "The Time Traveler's Pig."

Trivia

 * This anomaly didn't have a title it was simply named, "Gravity Falls anomaly #82"
 * The green creatures were not named.

Cryptograms

 * At the end of the short, yet another section of the hidden page flashes briefly with a cryptogram at the bottom of the page. It reads, "WKHP DOO ZHOFRPH WR JUDYLWB IDOOV." Once decoded, it then reads, "THEM ALL WELCOME TO GRAVITY FALLS."
 * The codes made from red numbers translates to "NEAR."