Every division has at least one fighter that fans tune in to watch. The guy who wins or loses brings in money and gets paid well for his efforts.
He may not have the best record, but fans know that he will keep going until there is nothing left to give or his opponent has knocked him out.
Every year there are changes to the list, as some fighters retire and others grow smarter and decide to fight to win instead of to have the fans cheer them.
Still, as long as there is fighting, there will always be martial artists who decide to scrap.
Here are the most exciting fighters from flyweight all the way up to heavyweight.