Vitali Klitschko
Vitali won multiple world heavyweight championships
Overall, he defeated 15 opponents in world heavyweight title fights,and made 12 successful title defences.
In 2011, Vitali and his younger brother Wladimir Klitschko entered the Guinness World Records as the pair of brothers with most world heavyweight title fight wins.
During his boxing career he also become involved in politics and is currently the mayor of Kyiv in Ukraine
When Russia invaded Ukraine this brave man (even though he was on a Russian hit list), stayed in Kyiv, took up arms and defended his homeland against the Russian invaders