Rose Namajunas

Became UFC's Women Strawweight Champion in 2017 by defeating Joanna Jedrzejczyk.

[How she got her nickname] I got it from my neighborhood friends. When I was little, I was the only white girl, I was smaller than everyone else, and for some reason, I just acted harder than everybody else - just fearless, you know? So they kind of dubbed me that because of the intimidating scowl I always had on my face. That's what gave me that name.