Israel Adesanya
Adesanya is one of the most exciting UFC fighters in the world. The middleweight champion has an electrifying kickboxing style but he polarizes fans with his trash talk. He’s not afraid to take things too far and sometimes he shows bad sportsmanship. We saw this when he crushed Paulo Costa in 2020 (via MMA Mania).

The pair had bad blood but usually, this goes out of the window after the fight. However, Adesanya crossed the line when he stood behind his rival and humped him like a dog. Some people thought that it was hilarious but others felt that it was despicable. The fighter had no regrets and said that the action was ‘justified.’