Mike Tyson

Former Boxing Heavyweight Champion; Entrepreneur & Philanthropist

Dave Bautista

Actor Known for "Guardians of the Galaxy" & WWE World Champion

Georges St-Pierre

Former UFC Welterweight Champion

Floyd Mayweather, Jr.

Undefeated Professional Boxer; Five-Division World Champion

Randy Couture

Only Athlete in UFC History to Win a Championship After Becoming a Hall of Fame Member & Oldest Title Holder Ever in the UFC and MMA

Wladimir Klitschko

Ukrainian Professional Boxer; Second Longest Reigning Heavyweight Champion

Thomas "The Hitman" Hearns

First Boxer in History to Win World Titles in Four Divisions

Thomas Hearns, Sugar Ray Leonard Together Again

Chuck Liddell

Mixed Martial Artist & Former Ultimate Fighting Championship Light Heavyweight Champion

Dewey Bozella

Arthur Ashe Courage Award Winner & Boxer

Micky Ward

Boxer, Real-Life Inspiration for Film "The Fighter"

Buster Douglas

Former Undisputed World Heavyweight Boxing Champion; Known for Knocking Out Mike Tyson

Kellie Maloney

Formerly Frank Maloney, Former Boxing Promoter and Television Personality

Anthony von Sager

Anthony von Sager, Speaker, Author, Champion, from Wheelchair to World Champion

Pinklon Thomas

Motivational Speaker & Two-Time Former Heavy Weight World Boxing and International Boxing Champion

Ariane Andrew

Dancer, Fashion Model, Pro Wrestler; Starred on the E! Hit Reality Series "Tough Enough"

Audley Harrison

First to Win Gold Medal in Super Heavyweight Division

Manny Pacquiao

Filipino Former Professional Boxer & Politician; Considered One of the Greatest Boxers of All Time

Cung Le

Retired Mixed Martial Artist, Kickboxer & Actor Known for "The Grandmaster" and "The Man With the Iron Fists"

Chance Kelly

Actor Known for Role in "Generation Kill" and "Aquarius"

Jermain Taylor

Professional Boxer and Former Undisputed Middleweight Champion