Brock Edward Lesnar (born July 12, 1977 in Webster, South Dakota) is an American mixed martial artist as well as a former professional and amateur wrestler. He is the current UFC Heavyweight Champion.

Before gaining prominence in World Wrestling Entertainment (WWE), Lesnar was an accomplished amateur wrestler winning the 2000 NCAA wrestling championship and placing second in 1999, losing in the finals to future New England Patriots offensive lineman Stephen Neal.  In WWE, Lesnar was the 2002 King of the Ring, and the winner of the 2003 Royal Rumble. He is also a three-time WWE Champion having become the youngest person to hold that championship in its history. After leaving WWE in 2004, Lesnar pursued a career in the NFL. He played during the preseason for the Minnesota Vikings, but ended up being a late cut. Lesnar returned to professional wrestling at the end of 2005, and joined New Japan Pro Wrestling, where he won the IWGP Heavyweight Championship in his first wrestling match since leaving the WWE. He was stripped of the title in July 2006, although he held the physical belt until June 2007. During his time with WWE Lesnar was widely considered as a prominent star and, potentially, one of the greatest performers of all time.

Lesnar started a career in Mixed Martial Arts and had his first fight in June 2007.  He then signed with the Ultimate Fighting Championship (UFC) in October 2007, and captured the UFC Heavyweight Championship from Randy Couture on November 15, 2008. (via Wikipedia)