Name a fighter that has had two unmatched accomplishments in MMA, accross organisations, can even date back to Pancreas if you will, that makes them a double champ. Don't include belts. They are all paid by mafia money anyway. Has to be noteworthy, so no don't invoke CM Punk. I'll start: Brendan Schaub. Accomplishments: KO'd Mirko Cro-Cop and banged Ronda.