Protos
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. It is a cobalt-colored world with corrosive gases, raging seas of Nucleon that mutate mechanical life, showers of shrapnel-like ice needles, and caustic windstorms. Protos is 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, even fewer have visited.
Fiction
3H comics
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, and then creating life, the first 12 Transformers. Covenant
The AllSpark Almanac
Primacron had a lab on Protos, which was located deep within Vok Territory. The AllSpark Almanac II
