McGregor is by far the stand-out star in UFC and even non-Mixed Martial Arts fans will recognise the now household name.
The Irishman’s rise to fame has been brought on by not only his dominance of the featherweight and lightweight divisions, but also his extroverted personality which thrives off controversy and makes for gripping viewing.
In his last outing, McGregor lost via submission to Khabib Nurmagomedov at UFC 229 in October 2018, and the aftermath brought severe penalties for the pair of them.
But when going back further to the start of the former two-division champion’s career, Buffer spoke all about the 30-year-old’s attitude when trying to make a name for himself.
“I know him, I first met him when he was around 18 or 19,” Buffer exclusively told Express Sport during a wide-ranging interview at the PokerStars Players No Limit Hold’em Championship (PSPC) in the Bahamas.
“I was doing a show in Dublin and this young kid came up to me with no beard.
“He goes ‘my name is Conor McGregor, remember it! I am going to be champion some day and you are going to announce me’.
“Okay great, I never forgot that though.
“And then when I met him when he first came in the UFC I reminded him of that and he remembered it too.”
Buffer, who has been the voice of UFC for well over two decades, credits McGregor for helping to propel the sport into the mainstream.
The Notorious’ first clash with Nurmagomedov was the most-watched UFC pay-per-view bout of all time.
And Buffer believes the millions of spectators want to watch McGregor because of his entertainment factor.
“You have got remember the intestinal fortitude that Conor has, that backstory and everything,” Buffer added.
“Even with a couple of the negative things he has done recently, the bottom line is he has been a big boost to the sport.
“He is worldwide.”
Buffer is competing at the PSPC, at the Atlantis Resort & Casino, where he made a profit after the first day.
And he is now gunning for a spot on the final table.
“It is my first time here which is great,” Buffer said.
“I had $100,000 but you have got to play, you cannot sit back so I ended the day on $71,000.
“I always believe I will make the final table. I don’t get into these things unless I think I can get to the final table.”
Outside of the Octagon, Buffer offers personalised introductions which can be found at BruceBuffer.com.