#2. ONE Championship middleweight and light heavyweight champion Aung La Nsang (2 championship reigns, 1218 days, 4 title defenses)
Former ONE Championship middleweight and light heavyweight kingpin Aung La Nsang is treated as a national hero in his home country of Myanmar. Holding perhaps the most intimidatingly apt nickname in MMA history, 'The Burmese Python' won championships in weight classes 20 pounds apart. That's a rarity in and of itself.
Winning ONE's 205 lbs and 225 lbs titles, Aung La is only the 2nd person to achieve double-champ status in the organization. Barreling through his competition with fights that were as violent as they were awe-inspiring, Aung La's domination couldn't be overstated.
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Not only was he a nightmare inside the cage, 'The Burmese Python' was also a role model to the people. Aung La's fighting spirit brought him above the pack as he harnessed the support of an entire nation in every fight.
1. ONE Championship bantamweight champion Bibiano Fernandes (2-times champion, 2786 days, 7 title defenses)
When you talk about domination, look no further than ONE Championship bantamweight king Bibiano 'The Flash' Fernandes. This frightening Brazilian, who looks like he's made of concrete boulders stacked together then wrapped in skin, is a problem not easily solved.
Fernandes has the resume to prove that he can soundly beat any fighter in his division anywhere, any organization. His record 7 title defenses only speak to the technical mastery and combat genius of Fernandes.
Even the aforementioned MMA GOAT Demetrious Johnson has admitted that he can never stop Fernandes' pressure-passing technique in training. That's just the tip of the iceberg when it comes to this bantamweight's greatness.
Tangling on the ground with former Brazilian jiu-jitsu world champion Fernandes is a recipe for disaster. It's like swimming in a raging ocean; you can struggle all you want, but you'll drown eventually. When it comes to striking, the bantamweight king has developed knockout power that has to be taken seriously.
Simply put, the ONE Championship pound-for-pound king has no glaring weaknesses and will be atop his division for a very, very long time.