Possible Clues:

• "Beef" comedian Wong
• Baba of fiction
• Remodeled Clay?
• 'Float like a butterfly, sting like a bee' boxer
• Fight of the Century loser
• He fought Frazier three times
• "Rumble in the Jungle" champ
• He worked on canvases
• Muhammad -, boxer
• "Moonlight" actor Mahershala