*Samus Aran is an intergalactic bounty hunter and the main protagonist of the Metroid series.

The daughter of Rodney Aran and Virginia Aran, she lost her parents during a Space Pirate raid on her home of K-2L. Later, Samus was adopted by the mysterious Chozo and taken to Zebes, where she was infused with their DNA and raised to become a warrior. Once she reached adulthood, Samus joined the Federation Police and served under the Commanding Officer Adam Malkovich. Though she ultimately left to become a Bounty Hunter, she was nonetheless hired by the Galactic Federation on many occasions. Equipped with her cybernetic Power Suit, Samus has become famous for accomplishing missions previously thought impossible. Her most renowned achievements are the destruction of the Space Pirate base on Zebes, her role in ending the Galactic Phazon crisis, her repeated extermination of the Metroid species, and her disobedience of orders at the Biologic Space Laboratories research station where she chose to destroy the deadly X Parasites rather than turn them over to the Galactic Federation. Having received an infusion of Metroid DNA to save her from an X infection, Samus is now the last "Metroid" in the galaxy.

Samus broke ground early in the gaming world when she debuted in the 1986 game Metroid. Originally players were under the impression that Samus was a male, as the English translation of the instruction manual used male pronouns for her.

However, completing Metroid in under five hours revealed Samus to be a young woman.[6] Although Samus wears the Power Suit throughout most of the Metroid series, she traditionally removes it at the end of most games, often as a result of satisfying certain conditions such as completing the game quickly or with a high percentage of the game's items collected or even both.

Samus Aran's Zero Suit is a tight, blue, full-body suit, emblazoned with Chozo markings. It first appeared in Metroid: Zero Mission and has been a recurring outfit in the series ever since, establishing a recognizable look for Samus when she is not wearing her Power Suit. The suit is blue and covers her entire body from the neck down, with glowing red markings on the back. In different iterations, the suit design varies slightly, with some versions featuring gloves, others with different line markings or even a lack of the breast sigil.*