|Zero Suit Samus actually exists, and it can be found in real encyclopedias. You may read more about it on the following wiki(s):|
Zero Suit Samus is Samus Aran without her Power Suit on. Without her Power Suit, Samus wears a Blue skin-tight leotard. Zero Suit Samus is much more agile and swift without her Power Suit, as she does not have to carry as much weight around. Zero Suit Samus also yields a gun that can turn into a laser whip.
Zero Suit Samus made her official Super Smash Bros. debut in Super Smash Bros. Brawl. However, she is not a new playable character on her own, but rather, she is Samus' alternate form, similar to Princess Zelda and Sheik. She was meant to be in Super Smash Bros. Adventure, however, she was taken out when Classic Mode was announced to have been removed. She appears in Super Duper Smash Bros. as a returning veteran. In this game, Samus and Zero Suit Samus can both be played at the same time, since they have separate parts on the character selection screen. Her final smash is to regain her power suit.