Samus Aran is the main protagonist of the Metroid games. She is a bounty hunter, and is famous for her orange-red Power Suit.
Bio
Samus was born on Earth Colony K-21, and was rescued by the Chozo when Space Pirates attacked the colony. They infused her with their blood, and they made the Power Suit for her. During her time with the Chozo, Samus learned their religion and made many pictures of her with them, as seen in Metroid: Zero Mission when she left their homeplanet, Zebes, the Space Pirates attacked it and eliminated the Chozo.
Samus was summoned by the Galactic Federation to go to Zebes and destroy the Space Pirate's biological computer, Mother Brain, and destroy their leader, Ridley. Samus did these things, and found out of the Metroids in the process.
The other adventures of Samus include ridding SR-388 of Metroids and hunting down the infamous Metroid Prime on Aether.