#2 Jon Jones.

The former light heavyweight champion Jon Jones is one of the best men to ever fight in the UFC.His skills are admired by all. But his life outside the octagon is not something admired by even his biggest fan, in fact, it's really hard to be his fan with his lifestyle.
The undefeated Jones has been accused of several offenses in his tumultuous career, the most recent one is that of steroids. Even though United State Anti Doping Agency (USADA) has no clear evidence to substantiate their claims, the man still remains suspended.
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Jones and his supporters are trying hard to vindicate his innocence, but Colby has no mercy to Jones. He is fully convinced that Jones is a juicehead and his illustrious career is the result of his juicing.
Colby has got Jones's attention now and he doesn't waste any opportunity to retaliate. Jones has been rooting heavily for Dos Anjos before his fight against Colby in UFC 225. Jones has also offered to help Colby's next opponent during training camp to see him face defeat.
Even the powerful Joe Rogan got in trouble after telling Colby to stop messing around with Jhones. But he gives no sign of making peace with the undefeated champ. As Rogan said, If this trend continues, the odds of Jones slapping Colby is really high.