5. Daniel Kinahan
Irish courts named Kinahan as the leader of one of Europe’s most violent drug cartels. Responsible for almost 20 murders in Ireland and Spain, they a brutal force. Currently, Kinahan lives in exile in the Middle East, where he avoids extradition. Why does this matter? He is also a major influence in boxing because of his promotion, MTK. MTK insists that Kinahan is no longer affiliated with them But everybody knows the truth.

In 2020, heavyweight champion Tyson Fury made waves when he thanked Kinahan on Twitter. It was seen as an attempt to legitimize Kinahan and sports-wash his reputation. Kinahan maintains an advisory role with many fighters like Fury and Billy Joe Saunders. Meanwhile, his cartel allegedly deals drugs, launder money, and ruins the lives of innocent people. He’s definitely one of boxing’s shadiest figures.