Neptune
From Futurama Wiki
Neptune is a planet in Earth's solar system.
It is the base of Santa in 2999. It is also home to the Neptunian race, who are small, square headed purple slaves employed by Santa to make his toys.
The terrain of Neptune appears to be icy, but in the episodes it is featured in, we only see it's Northern Pole, so it is possible only its north pole is icy.
