Protos

Protos is a moon and home of the Covenant from the Beast Wars portion of Generation 1 continuity family.

For Aiur!

Protos is a small moon orbiting Methuselah near the galactic core. Orbitally locked 'behind' the larger planet, Protos only sees brief moments of sunrise, many years apart.

Fiction

Generation One continuity

Primacron had a lab on this moon, which was destroyed by Grimlock.Call of the Primitives

Beast Wars continuity

Protos was created by Primus billions of years ago, as a prototype and dry run for the creation of Cybertron. For 300,000 years, part of Primus's essence reshaped Protos from the inside out: creating a self-sufficient hive-like colony, Sanctuary, then creating life, the first 12 Transformers.

Protos is a cobalt-colored world with corrosive gasses, raging seas of Nucleon that mutates mechanical life, showers of shrapnel-like ice needles and caustic windstorms. It's the most inhospitable environment imaginable, cloaked in near-absolute darkness, locked in the shadow of a giant planet that shields it from view. Few know it exists, fewer still have visited.

Transformers Animated

Primacron has a lab on Protos, which is located deep within Vok territory.Transformers Animated: The AllSpark Almanac Volume 2