Mai Shiranui (TechTree.com)

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Game: Fatal Fury/ King of Fighters

The King of Fighters may not be as popular as Street Fighter (globally) but there is no denying the fact that most gamers know of Mai Shiranui. She is a highly trained assassin and is famous for using her distinguished "assets" as a distraction before moving in for the kill. The developers may have created a character that will upset every feminist out there, but the guys ain't complaining.