Frunobulax is a planet home to an advanced race of green, telekinetic beings.
In the year of 1995, two laboratory mice engaged in world dominance, namely Pinky and the Brain, intercepted a space probe containing information about the Earth (similar to the Voyager Golden Record) and placed their own images there instead of Humans, so that alien civilizations would believe the mice to be the actual rulers of Earth.
The plan seemed to be working, as the Frunobulaxians found the probe and landed on Washington to take Pinky and the Brain to Frunobulax. Once they arrived there, however, he mice were put in a laboratory, as the aliens wanted to study them, pretty much like the Earth scientists. The episode ends with a variation of the serie's most famous dialogue:
Pinky: "Gee, brain, what are we going to do tonight?"
Brain: "The same thing we do every night, Pinky – try to take over Frunobulax!"
- Pinky and the Brain (First appearance)