Metroid (series)
The main character in the series is Samus Aran.  She always wears a very powerful space suit. This suit lets her do things that normal humans cannot do, such as jump very high and fall long ways without being hurt. The right arm on Samus' suit has a large gun built into it. She is seen in this space suit almost all of the time. In many of the games, if the player finishes the game fast enough or collects enough items, they can see her without the suit on. When this happens, she is either wearing a tight jumpsuit, or something resembling a bikini.