Harryson Pereira is a jiu-jitsu black belt under Elexsandro Silvestre Machado and a representative of the Ataque Duplo team in the sport. Harryson first made waves on at a global level as a brown belt, a time when he earned 2 silver medals at the International Brazilian Jiu-Jitsu Federation (IBJJF) World Championship, going on to further his career as a black belt. Pereira is also one of the few international competitors at the top tier level who is not a full-time professional.