The Mong were the last of the ancient people of the Galaxy.
Background
At some point in the past, the Mong were almost destroyed by an unknown event. Ceres was the only Mong who survived.
Mong Homeworld
Their homeworld was a huge planet surrounded by two sets of bright yellow energy rings. On the surface of this planet, the Mong people lived in huge cities, with very tall buildings.
Abilities
Mong abilities consist in their manipulation of gravity, like Ceres' starship. They also can manipulate minds through extremely beautiful flute songs.