A little pain went a long way.
Katja Kankaanpaa, Invicta FC's women's strawweight champion, has one of the most unique nicknames in all of MMA: "Killer Bunny." The story of how she got it starts with a bunny she used to own as a pet named Alice.
"One time, she attached to my husband's ankle," Kankaanpaa told MMAFighting.com "I think 'Killer Bunny' is a very good nickname since that day. Because bunnies, when they fight, they fight hard and they don't give up."
The Finnish star has adopted the nickname and also that mindset.