The United States Space Ship Ticonderoga is the largest space vessel ever built. Constructed over 500 years ago, it now orbits earth, most systems shut down - It is a treasure ridden derelict juggernaught.
A leftover relic of the ancients.
Or so would seem.
A collection of space habitats, space stations, space colonies, and anything else artificial that serves as a home to humans in SPAAAAAAAAAAAAAACE!
Here am I, floating in a tin can, far above the moon, Planet Earth is blue, and there’s nothing I can doo.
A salvage and scrap yard of the UFP
From an episode of Justice League Unlimited:
The God of War creates a giant, unstoppable robot (golem, animated armor, etc.) as a weapon for one side in a civil war; his purpose is to prolong the war and create suffering and war among humanity.
Quote from Ares in that episode, which would go well with this idea: "That's all you mortals are good for! To fight and fight and fight until there is nothing left but charred land and blood and bones, and to end it all and then start again with the next generation!"