Editing Zero Suit Samus

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|lastappearance= ''{{s|mariowiki|WarioWare: Move It!}}'' (2023, cameo)

'''Zero Suit Samus''' ({{ja|ゼロスーツサムス|Zero Sūtsu Samusu}}, ''Zero Suit Samus'') is [[Samus Aran]] sporting her {{s|metroidwiki|Zero Suit}}, the advanced bodysuit that she wears underneath her iconic {{s|metroidwiki|Power Suit}}. She most frequently appears in her Zero Suit (or other casual attire) at the end of each ''Metroid'', depending on the player's speed and efficiency at completing the game.

As demonstrated by two of Samus' casual outfits appearing as {{SSB4|alternate costume}}s beginning with ''[[Super Smash Bros. 4]]'', the identifier "Zero Suit Samus" simply refers to unarmored versions of Samus in general, a concept that has existed since the very first ''Metroid''.

[[Samus Aran]] has been shown without her Power Suit since the ''Metroid'' series' first installment, usually as part of an ending sequence or briefly as her Power Suit explodes in game over animations. ''Metroid'' allowed Samus to be playable in a leotard by using the famous "JUSTIN BAILEY" cheat code. However, the Zero Suit properly debuted in ''{{s|metroidwiki|Metroid: Zero Mission}}'', a Game Boy Advance remake of the original ''Metroid''. The game expanded on this by incorporating a playable, suitless Samus into the narrative for the first time, granting her a unique style of stealth-based gameplay. Ever since ''Zero Mission'', Samus has appeared in her Zero Suit in every ''Metroid'' game except ''{{s|metroidwiki|Metroid Prime Pinball}}'' and ''{{s|metroidwiki|Metroid Prime: Federation Force}}'', although the latter features a Zero Suit-inspired [[amiibo]] costume.

The Zero Suit covers Samus completely from neck-to-toe in a cyan, skin-tight bodysuit with magenta {{s|metroidwiki|Chozo}} sigils on her back, left breast, and the back of her hands. Although Samus' eye and hair color varied widely across early games, most current depictions consistently give her blonde hair and blue eyes. Initial appearances would depict Samus with a high ponytail with a red hair tie, long sidetails, and lean musculature. ''{{s|metroidwiki|Metroid Prime Hunters}}'' featured a redesign for the Zero Suit that was not used in subsequent games, with a more simplistic, gloveless bodysuit and a different hairstyle for Samus. ''{{s|metroidwiki|Metroid: Other M}}'' featured another drastic redesign by changing Samus' eye color (from blue to green-blue), her hairstyle (a lower ponytail and much shorter sidetails), her physical build (reducing her height and musculature), and the Zero Suit itself including wedged heels. This design was carried over to ''{{s|metroidwiki|Metroid: Samus Returns}}'' with minor changes, most notably by giving Samus a blue hair tie and a more athletic musculature akin to her ''Super Metroid'' appearance. Zero Suit Samus' ''Samus Returns'' design would return in ''Metroid Dread'', both for Samus' death sequence and for the final time-based completion reward.

Aside from the Zero Suit itself, Samus has been shown in other types of clothing when outside of her Power Suit, with the most typical attires being revealing sportswear such as tank tops and shorts. Two such Casual Outfits (as named by outifts in Nintendo's ''Miitomo'' app), which are seen in certain endings for ''Zero Mission'' and ''{{s|metroidwiki|Metroid Fusion}}'', appear as [[alternate costume]]s for Zero Suit Samus in ''SSB4'' and ''Ultimate''.

Zero Suit Samus rarely appears as playable in the ''Metroid'' games. She was first playable in this outfit in ''Metroid: Zero Mission'', for the aforementioned stealth segment. After losing her Power Suit in a crash-landing while escaping the planet Zebes, she was forced to evade Space Pirate forces with nothing but her Zero Suit and a self-defense {{s|metroidwiki|Paralyzer}} handgun. Zero Suit Samus was also playable in the extra ending of ''Metroid: Other M''. While returning to the derelict BOTTLE SHIP to retrieve the late Adam Malkovich's helmet, Samus briefly dematerialized her Power Suit to share a quiet moment with the memento. However, it was interrupted by the station's self-destruct alarm, forcing her to escape the exploding facility in her Zero Suit, carrying Adam's helmet and her Paralyzer for the lingering bioweapons obstructing her path.

Within ''Metroid'' canon, Samus boasts superhuman athleticism even without her Power Suit, thanks to the Chozo infusing their DNA within her and training her in combat during her childhood. While she is also much more adaptive to alien environments than a normal human thanks to her Chozo DNA, she is still extremely vulnerable without her Power Suit, and thus must rely on stealth, agility, and her Paralyzer instead of direct combat to achieve her objectives.

However, much like her fellow bounty hunter [[Captain Falcon]], Zero Suit Samus is depicted in the ''Super Smash Bros.'' series with a varied and highly physical martial arts fighting style that compliments her superhuman athleticism. She is also notable for her impressive flexibility and gymnastic skills, with many of her attacks involving her in splits, doing cartwheels, and more. Additionally, her Paralyzer is equipped with ''Super Smash Bros.''-specific design elements that grant it offensive potential, such as the ability to open into an electric beam whip similar to her Power Suit's Grapple Beam. Starting in ''Super Smash Bros. 4'', she was also equipped with wristbands and Jet Boots that improved her physical combat abilities. Her Paralyzer's beam whip and her Jet Boots have never appeared in the ''Metroid'' series.

{{StickerPicBox|Running Zero Suit Samus|Metroid: ZM}}