Vos (polity)
Vos was one of the many city-states on Cybertron that had existed before the beginning of the Great War.
Marvel Comics
Vos was ruled by a shadowy cabal that proped up Starscream as its figurehead.
In the closing days of the Golden Age, many of the city-states had rivalries with their neighbors, thus laying the foundation for much of the conflict that followed.
In an attempt to channel this competition, an Overlord had created a series of Arena Tournaments with the intent to quell the unrest between the city-states and bring them closer together. His efforts failed and war broke out between Vos and its rival Tarn.
Shortly thereafter, Vos and Tarn annihilated each other with a volley of missiles. Megatron put the blame on Iacon for starting the conflict and recruited many of its survivors into his fledgling Decepticon army.

