14. Jon Jones
The UFC doesn’t have many heroes in the clearest definition of the term. But Jones began his career in style as he became the youngest champion ever. It was an incredible achievement and he became a superstar.

But Jones is a disaster of a human being and this cost him dearly. His most notorious incident saw him crash into a pregnant woman’s vehicle. This hit-and-run incident caused the UFC to strip him of the title, and he is battling his demons to this day (via N.Y. Post).