Samus Aran is a former Galactic Federation soldier turned intergalactic bounty hunter. Born on the planet K-2L with her parents, Rodney and Virginia Aran, she will become orphaned when space pirates, led by Ridley, destroy the entire colony, leaving only Samus alive. Samus survived.

She was taken in by the Chozos, half-human, half-bird creatures living on a neighbouring planet, Zebes, where she was planet, Zebes, where she was taught by this noble people of incredible intelligence and intelligence and incredible technological progress. In addition to sharing their knowledge with Samus, the Chozos have decided to pass on their DNA to her as well.

At the age of 16, she decided to leave Zebes to avenge the death of her parents. The Chozos gave her a farewell gift: Old Bird's Power Suit. This armor, which resists hostile environments. It is thanks to this armour that she will join the Galactic Federation, pretending to be a robot.