Oleg Taktarov
"The Russian Bear"
Oleg Taktarov made his octagon debut in 1995 at UFC 5, and quickly developed a reputation for being tough as hell. Oleg is a Russian practitioner of the badass fighting style called Sambo. He is also a good Judoka (Judo practitioner).
Oleg Taktarov himself is also a bad ass. He has was never submitted and he never tapped during his MMA fighting career.