There are always going to be new champions in MMA. Eventually, a champion will be dethroned, and a new one will be crowned.
Some, however, last longer than others.
There have been fighters in MMA who have been champion for years and years at a time. There are champions who haven't even lasted six months.
To take the leap from champion to dominant champion, fighters need to hold the belt for as long as they can while defeating top contenders, whoever they may be.
Here are the 20 most dominant champions in MMA history.