Not only is the Irishman a talented fighter, but he has also most certainly been blessed with the gift of the gab.
McGregor may have stepped over the line on more than one occasion, but no UFC fan will soon forget when he took his trash-talking to the next level by grabbing Jose Aldo's title belt and hoisting it above his head while taunting his Brazilian opponent.
But, unfortunately for McGregor, his hopes of beating Aldo and lifting the title for real will have to wait after the champion suffered a rib injury and pulled out of their highly-anticipated bout at UFC 189.
As a result of Aldo's withdrawal, McGregor will face Chad Mendes for the interim title on Saturday. Mendes too has been unable to escape McGregor's trash-talking as the 26-year-old claimed: "I can rest my balls on your forehead".
Here are five of the most outrageous comments that McGregor has made:
5. "There are two things I really like to do – whoop ass and look good. I am doing one of them now and Saturday night, I will do the other." – McGregor speaking at a press conference prior to his fight against Max Holloway at UFC Fight Night 26.
4. "I don't just knock them out, I pick the round." – McGregor speaking at a post-fight press conference after beating Dustin Poirier in the first round.
3. "My knee popped, but f**k it, it is what it is. I just went with what was comfortable, and what was comfortable was get the motherf**ker to the ground. Looking back, I should have just pulled my knee from my leg and hit him with it." – McGregor speaking at a press conference after beating Max Holloway.
2. "My thoughts on Dennis Siver are he's a midget, German steroid head." – McGregor speaking at the UFC 178 pre-fight press conference upon hearing that Siver had been suspended after testing positive for human chorionic gonadotropin.
1. "I don't have anything bad to say about Jose Aldo. It's pretty plain and simple. His time is up. It's done. There's somebody ruthless coming to get him. There's somebody cold coming to get him. I can look at him dead in the eye and say, It's done. You're over now. You're a champion that nobody gave a f**k about. Nobody cared about him before I came along. Nobody cared about the division before I came along. He's a decision machine. He can barely finish his dinner, never mind his opponent. And he's fought bums. He's fought little small bantamweights and he still can't put them away. Now he's coming in against a monster of a featherweight who hits like a truck. It's over for him. I don't need to say jacks**t else. July is a wrap. It's inevitable." – McGregor speaking about his fight against Aldo during an interview with Esquire magazine.