Gabriel Willlcox is a Brazilian jiu-jitsu black belt under Marcelo Alonso, and one of the main representatives of the Carlson Gracie Academy in the sport's international circuit for 3 decades, from the 1990s to 2010s. Willcox made a name for himself as one of grappling's foremost light-featherweight competitors through his numerous medals in important tournaments of the International Brazilian Jiu-Jitsu Federation (IBJJF), such as the World Masters, International Masters & Seniors, Brazilian Nationals, European Open and many more.