Other than Aldo and Faber and maybe Edgar or Mendes. Kid Yamamoto - largely considered the #1 FW on the planet for some time. - went up to LW and won the Hero's LW Grand Prix. - dropped down to BW and beat Bibiano Fernandes and Rani Yahya - retired from MMA for two years during his physical prime in order to pursue a run at Olympic wrestling. Failed due to an injury and was never the same when he returned to MMA. Bibiano Fernandes - Started out his career with back to back losses to established FW greats, Faber and Yamamoto. - Went on to win the Dream FW Championship, beating Imanari, Warren and Hansen along the way. - Dropped to BW, winning two different championships. Probably greatest BW outside of UFC. - primary training/sparring partner of Mighty Mouse.