Raxacoricofallapatorius
Raxacoricofallapatorius is a paradise with burgundy seas, many islands and four polar regions. (REF: Doctor Who: The Visual Dictionary) It is filled with several indigenous species, including the Raxacoricofallapatorians and the Poppito tree. (REF: Doctor Who: Monsters and Villains, NDA: The Monsters Inside)
The criminal Slitheen and Blathereen families notwithstanding, the Raxacoricofallapatorians are a generally peaceful race. Raxacoricofallapatorians have limited technology, albeit highly advanced by Earth standards. (REF: Doctor Who: Monsters and Villains)
Raxacoricofallapatorius has a twin planet called Clom. (DW: Love & Monsters)