Jion

Jion (ジオン) is a small, barren, misshapen, and rocky planet floating in the endless regions of space.

Beast Wars Neo cartoon
Magmatron set a trap for the Blendtrons on Planet Jion using three Angolmois capsules as bait, burying the Dinosaur in the planet and setting up electric towers to shock the Blendtrons. The Maximals, not realizing the intention of the trap, leaped at the chance to grab some Angolmois capsules and were caught in perimeters of a set of electric towers. The Blendtrons soon arrived and were trapped themselves, but their greater powers allowed escape. Not fazed, Magmatron had the Dinosaur reveal itself and unleash all its firepower on the Blendtrons, which seemingly defeated them. As Magmatron was about to personally deal the finishing blow, Big Convoy, who had arrived to save his subordinates, attacked him. Using this opportunity, the Blendtrons energized themselves and attacked once more. Eventually, the Blendtrons chose to retreat and so did the Predacons.

The AllSpark Almanac
Jion was an unclaimed or neutral organic planet in the Milky Way.