Dross

Dross (ドロス Dorosu) is a planet.

Beast Wars II cartoon
A devastating battle between the Maximals and the Predacons was fought on Dross. The Insectrons were employed by the Maximals while the Autorollers fought on the side of the Predacons. Once the Predacon side overtook the Maximals, Autostinger cornered Bigmos but spared him due to their mutual nature of being mercenaries.

The AllSpark Almanac
Dross was a neutral robotic planet in the Milky Way.