Former UFC title challenger Yoel Romero will make his bare-knuckle debut on September 12 under the BKFC banner.The promotion announced on Tuesday that ‘Soldier of God’ will fight Theo Doukas, who is also making his debut, at BKFC 80 in Hollywood, Florida.McGregor unveiled former UFC title challenger Romero as a new BKFC signing in JulyBKFCBKFC is part-owned by UFC star Conor McGregor, who announced at the inaugural BKFC 2025 Champions Summit last month that Olympic silver medallist Romero had signed for his promotion.The Irishman also revealed former MMA fighters Derek Brunson, Thiago Santos, and Aspen Ladd, as well as ex-boxers James DeGale and Jamel Herring had signed on the dotted line with BKFC.Romero went on an eight-fight winning streak following his UFC debut in April 2013 to earn his first shot at gold.He lost an interim middleweight bout to Robert Whittaker at UFC 213, but bounced back with a stoppage win over Luke Rockhold in his next fight.The Cuban-American fighter then went on a three-fight losing skid before leaving the UFC and fighting under the Bellator and PFL banner five times.‘Soldier of God’ lost a middleweight title bout to Israel Adesanya in his final UFC bout before leaving Dana White‘s promotion.He is now set to face unknown former MMA fighter Doukas in his BKFC debut.Doukas has mixed it up four times in MMA, going 2-2 in the sport, with his last fight ending in a second-round submission defeat.McGregor became a co-owner of BKFC in April 2024 and has since been actively involved with the promotion while remaining out of action in the UFC.His last fight was a defeat to Dustin Poirier in the summer of 2021, although the Irishman has stated he wants to make a return to fight at the UFC White House card.View Tweet: https://twitter.com/hashtag/BKFC80?src=hash&ref_src=twsrc%5EtfwRomero tried his hand at Dirty Boxing after giving up MMADirty BoxingThe 37-year-old made several other big announcements when speaking at the Champions Summit in July.He, alongside BKFC President David Feldman, revealed a new World’s Baddest Man tournament, with a whopping $25million of prize money.The tournament is set to feature 32 fighters with open-weight rules, meaning fighters weighing between 185-265lbs are eligible for the tournament.The winner will take home a whopping $15m, with second place receiving $1m.Third and fourth place finishers will take home $500,000 each, and the remaining athletes are set to walk away with $300,000, $200,000, and $100,000, respectively.McGregor’s promotion also announced that equity in the organisation will be distributed to the promotion’s champions for the first time in the history of combat sport.McGregor has played a key role in promoting BKFC since his involvement with the companyBKFC“Do you understand how incredible that is?” McGregor said, speaking on BKFC’s new fighter equity programme.“For our combatants to be rewarded in that way and truly, truly be on board with us.“For me, I gave everything to the rise of a company and got nothing. Now, here we are. We give back to the fighters who bleed for us.“Welcome to the owner’s table. We are in this together. David Feldman, that is how you do it!”