Lennox Claudius Lewis is a boxing commentator and former professional boxer who competed from 1989 to 2003. He is a three-time world heavyweight champion, a two-time lineal champion, and held the undisputed championship. Holding dual British and Canadian citizenship, Lewis represented Canada as an amateur at the 1984 and 1988 Olympics; in the latter, he won a gold medal in the super-heavyweight division. Lewis is regarded by many as one of the greatest heavyweight boxers of all time, and one of the greatest British fighters of all time.
The World Boxing Council (WBC) is an international professional boxing organization. It is among the four major organizations which sanction professional boxing bouts, alongside the World Boxing Association (WBA), International Boxing Federation (IBF) and World Boxing Organization (WBO).
The World Boxing Organization (WBO) is an organization which sanctions professional boxing bouts. It is recognized by the International Boxing Hall of Fame (IBHOF) as one of the four major world championship groups, alongside the World Boxing Association (WBA), World Boxing Council (WBC), and International Boxing Federation (IBF). The WBO's headquarters are located in San Juan, Puerto Rico.
Azumah Nelson is a Ghanaian former professional boxer who competed from 1979 to 2008. He was a two-weight world champion, having held the WBC featherweight title from 1984 to 1987 and the WBC super-featherweight title twice between 1988 and 1997. He also challenged once for the unified WBC and IBF lightweight titles in 1990. At regional level, he held the ABU, and Commonwealth featherweight titles between 1980 and 1982. Widely considered one of the greatest African boxers of all time, he is currently ranked as the 69th greatest pound for pound boxer of all time by BoxRec.
The International Boxing Federation (IBF) is one of four major organizations recognized by the International Boxing Hall of Fame (IBHOF) which sanctions professional boxing bouts. The others are the World Boxing Association (WBA), World Boxing Council (WBC) and World Boxing Organization (WBO).
Erik Isaac Morales Elvira is a Mexican former professional boxer who competed from 1993 to 2012. He is the first Mexico-born boxer in history to win world championships in four weight classes, ranging from super bantamweight to light welterweight.
In boxing, the undisputed champion of a weight class is the boxer who simultaneously holds world titles from all major organizations recognized by each other and the International Boxing Hall of Fame. There are currently four major sanctioning bodies: WBA, WBC, WBO, and IBF. There were many undisputed champions before the number of major sanctioning bodies recognizing each other increased to four in 2007, but there have been only 19 boxers to hold all four titles simultaneously.
Takashi Koshimoto is a former Japanese professional boxer in the featherweight division. He is a former WBC world featherweight champion.
Roberto Garcia Cortez is a Mexican-American former professional boxer who competed from 1992 to 2001, and held the IBF junior lightweight title from 1998 to 1999. He has since worked as a boxing trainer, and was voted Trainer of the Year by The Ring magazine in 2011, and by the Boxing Writers Association of America in 2012. He is the older brother of professional boxer Mikey Garcia, who was a world champion in four weight classes.
Andrzej Wawrzyk is a Polish heavyweight boxer. He challenged once for the WBA (Regular) world heavyweight title in 2013.
An octuple champion is a boxer who has won major world titles in eight weight classes. To date, the only octuple champion is Manny Pacquiao, who has won twelve major world titles.
Sajad Sattari is an Iranian Muay Thai Kickboxer. He is current Rajadamnern Stadium and WBC Muay Thai welterweight world champion. Sattari ranked #5 in the WMO welterweight rankings.
Luca Antonio Cinqueoncie
Aaron McKenna
Oliver Meng
Talgat Shayken
Omar Alejandro Aguilar
Lalrinsanga Tlau
MUHAMET QAMILI
Tibo Monabesa 
Jesús Haro