Professor Marcello's training started in March 2003 in one of the greatest competition schools in the world, Alliance Head Quarters in Atlanta, Georgia under 7th Degree Black Belt Romero "Jacare" Calvacanti. Since then Marcello has continued to practice and teach Jiu Jitsu in many parts of the world from civilians to military personnel. Professor Marcello received his black belt in 2011 by Hall of Fame World Champion Jiu Jitsu Competitor, Professor Alexandre "Xande" Ribeiro. In 2014 Marcello received his 1st degree black belt by World Champion Jiu Jitsu Competitor Raphael "Gordinho" Correa Lima. Following, in 2017, his 2nd degree was presented to him by Master Pedro Sauer.