Barao, Glover, Aldo, unfortunately the LHW title holder atm.
Actually you said "fighter." It would have to be Rocky Marciano. I don't know how he fought that long unscathed.
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.