20 Believable Butt-Kicking Women | Photo 4 of 20 | EW.com 

\'\'Expendables 3\'\'/MMA star Ronda Rousey takes no prisoners, joins the ranks of credible badass ladies on screen

, Rousey doesn\'t just fight when there are cameras around. She has actually made a living out of beating people up, and for that matter, being the best at it. Rousey is a mixed martial artist and the current UFC Women\'s Bantamweight Champion. She\'s undefeated and known for winning the majority of her fights by armbar. The last competitor who tried to take her title? Yeah, Rousey knocked her out in 16 seconds. —

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