Jorge Armando Arce Armenta, best known as Jorge Arce, is a Mexican former professional boxer who competed from 1996 to 2014. He is a multiple-time world champion, and the second boxer from Mexico to win world titles in four weight divisions. In a storied career, Arce held the WBO light flyweight title from 1998 to 1999; the WBC and lineal light flyweight titles from 2002 to 2004; the WBO super flyweight title in 2010; the WBO junior featherweight title in 2011; and the WBO bantamweight title from 2011 to 2012. Additionally he held the WBC interim flyweight title from 2005 to 2006, the WBA interim super flyweight title from 2008 to 2009, and challenged once for the WBC featherweight title in his final fight in 2014.
Ricardo López Nava is a Mexican former professional boxer who competed from 1985 to 2001. He was a two-weight world champion, having held the WBC mini flyweight title from 1990 to 1998, defending it against a record-breaking 21 opponents; the WBA and WBO mini flyweight titles between 1997 and 1998; and the IBF junior flyweight title from 1999 until his retirement in 2001. He is one of just fifteen world boxing champions to retire without a loss. He is the father of undefeated former boxer Alonso López.
Brian Viloria is a retired American professional boxer of Filipino descent. He is a former unified WBA and WBO flyweight champion, as well as a former WBC and IBF light flyweight champion. His nickname of "The Hawaiian Punch" was first given to him by Jesus Salud, a fellow Hawaiian of Filipino descent and himself a former world champion in boxing.
Fernando Montiel Martínez is a Mexican professional boxer. He is a multiple-time former world champion in three weight classes, having held the WBO flyweight title from 2001 to 2002, the WBO junior bantamweight title twice between 2002 and 2008, and the unified WBC and WBO bantamweight titles from 2010 to 2011.
Jhonny González Vera is a Mexican professional boxer. He is a three-time former world champion in two weight classes, having held the WBO bantamweight title from 2005 to 2007, and the WBC featherweight title twice between 2011 and 2015. Additionally, he held the IBO featherweight title from 2010 to 2011.
Marcellus Joseph Johnson, better known as Mark "Too Sharp" Johnson, is an American former professional boxer who competed from 1990 to 2006. He is a three-time world champion in two weight classes, having held the IBF flyweight title from 1996 to 1999; the IBF junior bantamweight title from 1999 to 2000; and the WBO junior bantamweight title from 2003 to 2004.
Hugo Fidel Cázares is a Mexican professional boxer who is the former WBA Super Flyweight champion, WBO and Lineal Light Flyweight champion.
Ratanapol Sor Vorapin is a Thai former professional boxer. He is the older brother of former World Boxing Organization Bantamweight champion Ratanachai Sor Vorapin.
Nonito Gonzales Donaire Jr. is a Filipino professional boxer. He has held multiple world championships in four weight classes from flyweight to featherweight, including the WBC bantamweight title since May 2021. In addition to being the oldest boxer in history to become a bantamweight world champion, Donaire holds the distinction of being the first three-time champion in that weight class. He has also held world championships across three consecutive decades: the 2000s, 2010s and 2020s, being the sixth boxer to do so after Evander Holyfield, Manny Pacquiao, Bernard Hopkins, Érik Morales, and Floyd Mayweather Jr.
Geronimo "Gerry" J. Peñalosa is a Filipino former professional boxer who competed from 1989 to 2010. He is a two-weight world champion, having held the WBC and lineal super flyweight titles from 1997 to 1998, and the WBO bantamweight title from 2007 to 2009. Originally from the city of San Carlos, Negros Occidental, Peñalosa currently resides in Manila. He was trained mainly by Freddie Roach, and went on to become a boxing trainer himself after retirement. Peñalosa's older brother, Dodie Boy Peñalosa, is also a former boxer and world champion.
Alex John Banal, more commonly known as A. J. “Bazooka” Banal, is a Filipino professional boxer. Banal resides in Ermita, Cebu City, Cebu, where he trains in the city's famed ALA Boxing Gym.
Donnie Liboon Nietes is a Filipino professional boxer. He is a world champion in four weight-classes, having previously held the WBO mini-flyweight title from 2007 to 2011; the WBO and The Ring magazine junior-flyweight titles between 2011 and 2016; IBF flyweight title from 2017 to 2018; and the WBO junior-bantamweight title from 2018 to 2019. He is the longest-reigning Filipino boxing world champion, surpassing in 2014 the record set in 1967 by Boxing Hall of Fame inductee Gabriel "Flash" Elorde. He was one of the first three Asian fighters with world titles in at least four weight classes alongside fellow Filipinos Manny Pacquiao and Nonito Donaire.
John Riel Reponte Casimero is a Filipino professional boxer. He has held world championships in three weight classes; the WBO bantamweight title from 2019 to 2021; the IBF junior-flyweight title from 2012 to 2013; and the IBF flyweight title in 2016. Quadro Alas is Tagalog for four of a kind when translated, his moniker means Four Aces.
Milan Melindo is a Filipino professional boxer who held the IBF and IBO light-flyweight titles in 2017. He also challenged for the unified WBA (Super) and WBO flyweight titles in 2013 and the IBF, WBA (Super), and WBC light-flyweight titles between 2015 and 2018.
Michael "Bruce Lee" Domingo is a Filipino retired professional boxer and current WBO Oriental bantamweight champion.
Zolani Tete is a South African professional boxer. He is a former two-weight world champion, having held the IBF junior-bantamweight title from 2014 to 2015 and the WBO bantamweight title from 2017 to 2019.
Fahlan Sakkreerin or Fahlan Lukmingkwan is a retired Thai professional boxer who takes IBF mini flyweight and WBF flyweight world championships in 1990s.
Sor Vorapin is a Muaythai and professional boxing gym based in Bangkok, Thailand.
Osvaldo Guerrero-Camargo is a Mexican former professional boxer who competed from 1991 to 2004, challenging for the IBF mini flyweight title in 1995.
Edito "Ala" Villamor is a Filipino former professional boxer. Competing from 1989 to 1996, he challenged twice for mini-flyweight world championships; the IBF title in 1993 and the WBC title in 1996.
Thai