6. Fallon Fox
Image Source: trend-chaser.com
Image Source: feministing.com
Fallon Fox is the first MMA (Mixed Martial Arts) fighter to go through gender reassignment surgery – and her major life decision definitely caused a lot of controversy. The 5’7’’ athlete, who holds the record of winning a match in no more than 39 seconds, received a lot of criticism from both fans and mavens of the martial arts world, who claimed that Fallon still had the bone density and power of a male. However, Fallon is able to compete as a female fighter these days, ever since she was able to prove that her body holds high levels of estrogen.