Samus,
when she was only a small child, her entire family was executed by the dark dragon, Ridley.
left alone with nothing, she was found by the alien chozo and given special powers. Now armed with an arm cannon, mechanical suit and more weapons than you can dream of, she seeks to eliminate Ridley once and for all. At the age of 24, she has destroyed entire planets, defeated 50 foot kaju and even saved the entire galaxy.