Katheryn Winnick
Katheryn Winnick is a Hollywood martial arts treasure. Long before she captivated us in her role in Vikings, she was crushing it in the dojo as a tween. By the time she was 13, Winnick was already practicing martial arts and had three martial arts schools running by the age of 21.
The Vikings star focuses on taekwondo and karate and holds black belts in both disciplines. She holds a 3rd Dan black belt in taekwondo and a 2nd Dan black belt in karate.