Every UFC champion currently dictating his or her respective division has successfully and methodically pieced together memorable title reigns.
But even with the elite athleticism, world-class technique and blazing potential, no single titleholder is perfect.
It's a realization that each and every one of them takes to heart when grueling training camps commence and hungry contenders take center stage.
By understanding certain weaknesses and unprecedented quarrels, each divisional king is able to pinpoint the tools needed for greater evolution.
With that said, here's what each UFC champion needs to prove moving forward.