Mark Henry is billed as "The World's Strongest Man" because he competed in the 1992 Olympics in Barcelona, Spain. Henry stared in the WWE in 1996 on his own, but he quickly joined The Nation of Domination with The Rock, Faarooq and D'Lo Brown. He would regularly team with D'Lo, but never had much success.
The group disbanded and he went out on his own, winning the WWE European Championship. He also joined up with Mae Young and Fabulous Moolah and was known as "Sexual Chocolate," who would romance the two old ladies.
He left the Federation in 2001 to go back to Strongman Competitions, but joined back up with the WWE and went to Smackdown! where he is today. In the beginning of 2006, he challenged champion Kurt Angle at the Royal Rumble for the heavyweight championship. He lost, but then went on to wrestle the Undertaker on Saturday Night's Main Event.
Henry suffered a knee injury in the middle of 2006, and is recuperating up to this moment today.