This is what made PRIDE so special. Full of life long martial artists. Highly accomplished combat athletes
Fedor Emelianenko - World Combat Sambo Champion 4x, Russian National Judo Team, trained kickboxing with world class Dutch strikers, boxing since childhood
Antonio Rodrigo Nogueira - BJJ Black belt, Judo black belt, trained boxing with Cuban National Team
Mirko Cro Cop - one of the top Kickboxers in the world, over 40 boxing matches, trained BJJ with Werdum, karate and Tae Kwon Do training
Josh Barnett - one of the top Catch wrestlers in the world, IBJJF World No Gi Champ, ADCC vet, amateur wrestling experience, Judo and Kickboxing training at a young age
Sergei Kharitonov - Could have entered Olympics in Boxing but chose to enter PRIDE Grand Prix instead, Asian Championships Silver Medalist in Boxing, silver Medalist in Russian Championship, Sambo training, Russian Military Hand to Hand Combat training, professional Kickboxer, some freestyle wrestling training
Fabricio Werdum - World Jiu Jitsu Champion, ADCC Champion, trained striking with Cro Cop and later Rafael Cordeiro
Aleksandr Emelianenko - World Combat Sambo Champion, training since childhood in boxing, Sambo, Judo, wrestling
Mark Coleman - Olympic Wrestler, NCAA national champion, Pan Am and National Champ
Kevin Randleman - NCAA National Champion in wrestling 2x
Mark Hunt - one of the top kickboxers in the world
Hidehiko Yoshida - Olympic Gold Medalist in Judo
Noaya Ogawa - Olympic Silver Medalist in Judo
Ron Waterman - College Wrestler, High School wrestling coach of Shane Carwin
Tom Erikson - NCAA All American Wrestler, 2x Junior College National Champion
Mark Kerr - NCAA National Wrestling Champion, Freestyle Wrestling National Champion, ADCC Champion
Heath Herring - Wrestler, Sambo training, moved to Holland to train with Dutch strikers
Igor Vovchanchyn - Over 70 kickboxing fights on top of 60+ NHB fights, Sambo training
Semmy Schilt - one of the top Kickboxers in the world, K1 Grand Prix Champion, Karate training since child
Kazuyuki Fujita - National Wrestling Champion in Greco, missed making Olympic team by 1 point at Olympic qualifiers, Freestyle Wrestling
Alistair Overeem - pro Kickboxer, ADCC Europe trials winner, Judo training
There were also some very skilled fighters in the UFC at the time like Couture, Mir, Ricco, Arlovski. Not too many current UFC Heavyweights have these types of backgrounds. Those that do dominated in recent memory like DC (Olympic Wrestling team captain) and Stipe (NCAA wrestler and Golden Gloves boxer)