Why his ear look like that

Good question! It's called cauliflower ear and it happens bcs of excess injuries in that place wich restricts blood flow making the ear look lie that. It happens to mfc fighters, boxers etc

Jk? It is a condition that could happen in MMA, wrestling, and boxing. it is called cauliflower ear.

If you're talking about Jaekyung's, it's called boxer's ears or wrestler's ears. Athletes who do martial arts mostly have them