Conor Anthony McGregor is an Irish professional mixed martial artist. He is a former Ultimate Fighting Championship Featherweight and Lightweight Champion, becoming the first UFC fighter to hold championships in two weight classes simultaneously. Known for his striking skills and charismatic personality, McGregor has become one of the most recognizable figures in combat sports. He has competed in boxing, notably against Floyd Mayweather Jr., and continues to be a major draw in the UFC. McGregor also ventures into business and philanthropy, with his own whiskey brand and various charitable efforts.