Osmos

Osmos is a sun with at least five planets orbiting it, Osmos V is the fifth and only confirmed planet in this solar system. Osmosians are the only known species living in this solar system

Osmos was confirmed true by Dwayne, also saying Osmos V is the fifth planet from Osmos.

Trivia

 * The name Osmos comes from the word "osmosis", the process by which a solvent (e.g. water) diffuses from an area of a high concentration through a semi-permeable membrane into an area of low concentration. It is also the process by which cells absorb water and nutrients. This is a referance to Osmosians and their powers.