Age: 33

MMA Record: 3– 1

Since the age of four, Marlon Sims has wanted to be the best pound-for-pound fighter in the world. Growing up, Marlon was constantly training. He took up Kempo and Sambo, achieving black belts in both. Before graduating from Sonoma Valley High in 1992, he was a two-time state champion in Greco Roman wrestling, and was regularly scouted by Stanford’s tennis coaches during the spring athletic season. He opted to train in mixed martial arts, instead, dabbling in jiu jitsu briefly before injuries caused him to focus on muy thai.

Living in the Bay Area, Marlon trained during the day and worked as a waiter captain at the famous Le Colonial night. He worked out with Frank Shamrock in the Napa chapter of The Lion’s Den, but relocated to Miami where he lives with his girlfriend, a future anesthesiologist, and trains with the Freestyle Fighting Academy.

When not training, Marlon is a huge fan of martial arts films starring Tony Jai, Bruce Lee, and Jet Li. Musically, Marlon’s tastes range from classical music to Johnny Cash to Lyrics Born to Pantera. Despite moving to Miami, Marlon still follows the 49ers and Oakland A’s closely, and says Roger Federer and Mirko Cro Cop are heroes of his because of the dominance they display in their fields.

Marlon earned his nickname for his renowned fighting prowess on the streets of San Francisco, breaking up many brawls with nary a scratch to show for it. Sims says the title is apt, but for different reasons – he once was hit by a car and thrown through its windshield, and walked out of the hospital four hours later with only a tooth missing.

While on The Ultimate Fighter 5 , “Mr. Indestructible” hopes to live up to his namesake while working on his jiu jitsu and striking ability with the coaches and other competitors.