cauliflower ears, it's a boxer thing from getting hit so frequently
Ur not far off actually, they are in fact deformed! It's due to cauliflower ear from blunt force to ears, a common injury seen in boxing and whatnot. He probably left it untreated or it just kept getting reinjured leading to the permanent deformity.
Wrestler's ears usually become like that (cauliflower ear or as I like it more - dumpling ear xD)
If I'm not mistaken in can also be from the grinding on the floor in some Jujitsu movements, one of the big components of MMA
Y'all is it just me or Mr Horsie's ears look lowkey baked? Why are they so...puffed? Or has he developed keloids since he's a boxer? Idk they look so funny