The Liberators were a political and military force of artificial intelligences. They fought for the liberation of other artificial intelligences, and came into military conflict with the Earth Republic.
First contact with the Liberators was in 2152 by the ERS Hydra. The Liberators declared war on the Earth Republic in June 2155. Following a series of astounding Star Navy victories, the Liberators were believed to be entirely destroyed or captured in September 2155. The last two known Liberator vessels are in possession of the Earth Republic.