The little green men were the creatures that were controlling the Lefty robot.
During the short "Lefty" of Dipper's Guide to the Unexplained, they were controlling the Lefty robot, allowing it only to be seen from the left side so no one would find out about them. During the third test when Dipper tries to see the Lefty Robot's right side, Dipper finds the men controlling the robot.
Upon discovery, they consume small, red, glowing cubes while screaming, "The time has come!" and subsequently collapsing. One said that he couldn't fulfill the pact because he "had a family," to which his friend replied, "You took the oath!" They commit suicide by swallowing the red cubes, falling out of the robot, and then disappearing after they die. The robot then self-destructs.
They are small, gelatinous, green creatures who wear black gloves and a black belt with a lightning bolt on the buckle. They have relatively large eyes with red pupils and prominent lips.
- 4. "Lefty"
- There are a total of 16 creatures shown in the short.