Question: Who was once considered the best kick boxer in the world, however he has been involved in a number of controversies relating to his "unsportsmanlike conducts" in the sport and crimes of violence outside of the ring.
Sentence (from "Badr Hari"): He is a former K-1 Heavyweight champion (2007—2008), It's Showtime Heavyweight world champion (2009-2010) and "K-1 World Grand Prix 2009" finalist.
Relevant evidence: No