My game has two factions, rather than just one...
Two members of GGI, Buster and the Bolt, appear to be weapons in some Cold War between the B’ltz and B’Starri, two factions of the same alien race who have extended their feud throughout the cosmos, encompassing all space and time. In pursuit of the upper hand, The B’Starri have mastered space, creating weapons that can transport galaxies from one side of the universe to another at the speed of thought. Meanwhile the B’ltz have mastered time, creating weapons that can dismantle a galaxy between heartbeats. Eventually, their feud threatened the existence of time and space itself. In a desperate effort to save both, a truce was signed at the edge of oblivion, effectively removing both factions from the universe as we understand it. By the rules of their truce, each faction is allowed to give the smallest fraction of their power to one sentient creature in every discreet biosphere. Thus the cold war exists everywhere, at all times.
Naturally Buster and the Bolt have no sympathy for the Cold war, and go about protecting the Earth...