Conor McGregor holds history of controversy

Conor McGregor is one of the most bankable stars in UFC - his rags to riches story has inspired millions around the world, but his loud mouth and quick temper has a habit of landing him in hot water.

Born in Crumlin in Dublin in 1988, McGregor took up boxing at the age of 12 but was unemployed and surviving on benefits by the time he began training in mixed martial arts (MMA) in 2006.