Vic Darchinyan (born January 7, 1976 in Vanadzor, Armenia) is the former IBF and IBO champion of the flyweight division. He is a southpaw boxer, who currently trains under Billy Hussein, brother of boxers Nedal and Hussein Hussein. Previously, he was trained by former 3-division world champion, Jeff Fenech in Sydney, Australia. Darchinyan's amateur career was 158-18 record with 105 knockouts, all but twenty of them were in Armenia, …

Dr. Wladimir Wladimirowitsch Klitschko ("Volodymyr Volodymyrovych Klychko"); born March 25 1976 in Solnechnoe, Semipalatinsk, Kazakhstan) is a Ukrainian heavyweight boxer, former WBO and the current IBF and IBO World Heavyweight Champion. Though a major celebrity in his former adopted home of Germany, in 2004 he moved with his older brother, former heavyweight champion Vitali Klitschko, to Beverly Hills.

Floyd Mayweather, Jr. (born February 24 1977) is a professional American boxer. His father, Floyd Mayweather Sr., is a former welterweight contender and is currently working as a professional boxing trainer. One of his uncles, Jeff Mayweather, is a former IBO super featherweight champion. Another uncle, former two-division world champion Roger Mayweather, is Mayweather Jr.'s current trainer. Mayweather Jr. has started his own record label called Philthy Rich Records.

Dr. Vitali Vladimirovich Klitschko born July 19, 1971). known as "Dr. Iron Fist", is a professional boxer since 1996. In 2005 he retired, but in January 2007 he announced his comeback. He was the WBC heavyweight boxing champion of the world in 2004 and 2005. He is 6' 8" (2.02m) tall, and was born in Belovodsk, Kyrgyzstan, in the former Soviet Union. Vitali has the highest knock out percentage (92%) of any heavyweight champion.

Roger Mayweather (born April 24, 1961) is a retired professional boxer. He won two major world titles in two different weight classes. Throughout his career, Mayweather fought against many other boxing champions of the 1980s and 1990s. He is a part of the Mayweather boxing family; his brothers are former welterweight contender Floyd Mayweather Sr. and former IBO super featherweight champion Jeff Mayweather, and his nephew is five-division world champion Floyd Mayweather Jr.

Floyd Mayweather Sr. is a professional boxing trainer, and father and former trainer of five-division champion Floyd Mayweather Jr. Floyd Sr. was a 1970s–1980s welterweight contender. Floyd Sr. is known for his defensive ability as well as his overall knowledge of boxing strategy and is credited for teaching his son the defensive skills that made him a champion.

Raymond Joval (born 15 September, 1968 in Amsterdam, Noord-Holland) is a professional boxer from The Netherlands, who is the current International Boxing Organization World Middleweight Champion. Raymond "Hallelujah" Joval has a career professional record of 35 wins and 4 defeats. He made his debut on January 8, 1994. Joval represented the Netherlands at the 1992 Olympics. Joval has been the IBO Middleweight Champion since defeating Shannan Taylor on November 27, 2005.

Roman Greenberg (born 18 May, 1982, in Russia) is a British-based Israeli 6' 3" heavyweight boxer, currently International Boxing Organization's (IBO's) Intercontinental heavyweight champion.

Brian Nielsen is a former boxer from Denmark, who won bronze medals in the super heavyweight division at the 1991 European Championships and the 1992 Olympics in Barcelona, and turned pro shortly after the Olympics. He won 102 out of 111 amateur fights. Nielsen's pro career looked obscure at first, but things started to change after his fifth-round stoppage of former World Boxing Association champion James 'Bonecrusher' Smith in October, 1994.

Mzukisi Sikali, (July 30 1971 - September 16 2005), was a South African boxer who served as a world champion in three different weight categories: junior flyweight, flyweight, and super flyweight. Sikali, who was regarded as one of South Africa's top boxers, was stabbed to death after he attempted to fight off a couple of muggers in Uitenhage, near Port Elizabeth. The muggers were arrested around an hour after the incident; and a mobile phone, …

Jeff Mayweather (born July 4, 1964 in Grand Rapids, MI) was a boxer who fought in the 1990s. "Jazzy Jeff" had a career boxing record of 32-10-5 (10 KOs). His biggest accomplishment was winning the IBO super featherweight title from John Roby on April 21, 1994. He later became a boxing writer and trainer (of Zahir Raheem and Shannon Briggs). He is a member of the Mayweather boxing family; his brothers are former welterweight contender Floyd Mayweather Sr.

Rafael Márquez Méndez is a professional boxer in the Bantamweight and jr. Featherweight divisions. His record is 37-3 (33 KOs). He is the former IBF and IBO world bantamweight champion and current WBC jr. featherweight world champion. Márquez's professional boxing debut was an eighth-round knockout loss to former WBC bantamweight champion Victor Rabanales. Marquez first gained recognition by defeating perennial pound for pound legend Mark Johnson (boxer) twice.

Billy Schwer was born in Luton, Bedfordshire on 12 April 1969. He was a light-welterweight boxer, winning 39 fights, 30 as knockouts. He held the British, Commonwealth and European titles, before winning the International Boxing Organization light-welterweight belt in 2001. Schwer retired shortly after in 2001. His record was 45 fights, 39 wins and 6 defeats.