Promethea is a planet in the galaxy where the Atlas corporation found alien technology and reverse-engineered it in order to manufacture improved starships and weaponry with the benefits of this new technology. The Crimson Lance also have a military presence on the planet, with General Knoxx stating that Roland served "two tours" on the planet.
Living conditions are presumably harsh, or at least worse than the already difficult life for Pandoran settlers, as an Atlas propaganda message at T-Bone Junction (when referring to the positive side of Pandora) states "...at least you're not on Promethea!" Citizens of Sanctuary occasionally comment to the same effect.
- In Greek mythology, Prometheus is the Titan who stole fire from Zeus to give to men. After the war with the Olympians, Prometheus defected to the side of the mortals. Pandora's Box was then created through Zeus' will as a sort of revenge on men for Prometheus giving men fire. Fire can be symbolically seen as the advanced technology the Atlas corporation acquired, with Pandora clearly being the planet in which Borderlands takes place upon.
- In Borderlands 2 the Hyperion sniper rifle Morningstar states that: "there are children on Promethea who can't afford ammo you know!"