Protos
Protos is a small moon orbiting the ancient planet Methuselah.
Fiction
Generation 1 cartoon continuity
The Transformers cartoon
Primacron's laboratory was where he created Unicron with the assistance of the Oracle. Unicron rebelled, shooting a beam through the laboratory that destroyed the Oracle, but freeing his essence—the Matrix of Leadership—which fled to an ancient planet. Much later, Primacron would try again, creating Tornedron. Tornedron would eventually rebel as well, but the stowaway Grimlock would solve the issue by flipping a switch that reversed Tornedron's energy polarity, destroying the entity. In celebration, Grimlock wrecked the lab, to Primacron's agony. Call of the Primitives
Ask Vector Prime
This laboratory was a moon, named Protos, that orbited the ancient planet, named Methusula. Ask Vector Prime, 2015/06/10
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, the Sanctuary, and then creating life, the first twelve Transformers.
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. Covenant
Animated cartoon
Primacron had a lab on Protos, which was located deep within Vok Territory. The AllSpark Almanac II
TransTech
In the wake of the descent of the Shroud, TransTech Minister of Higher Dimensional Sciences Rhinox proposed to create a Large Pulsar Array in the vicinity of Protos to create a Hyperwave dimensional-oscillation generator in order to restore Axiom Nexus's transdimensional capabilities. Ask Vector Prime, 2015/11/01
