When Conor McGregor steps into the octagon to face Max Holloway after a five-year absence on Sunday, it will be a bittersweet moment for many fans.
On one hand it is the return of the biggest star in mixed martial arts history, with McGregor central to the sport's rise in popularity.
The Irishman was the UFC's first simultaneous two-weight world champion, while his brash and witty personality captivated fans like no MMA fighter before him.
But for all McGregor's achievements within the sport, his career has been dogged by controversy.
From court cases, where McGregor lost a civil jury appeal against a finding at the High Court in Dublin that he had ****** ually ****** aulted a woman in a Dublin hotel, to a failed presidential run and missed drugs tests, a number of incidents have cast large question marks over his legacy.