Who granted this American Brazilian jiu-jitsu practitioner, who founded Metamoris, a black belt?
Ralek Gracie: Ralek Gracie ( ; born October 4, 1985) is an American Brazilian jiu-jitsu practitioner and mixed martial artist. Ralek Gracie:  He was awarded his black belt in Brazilian jiu-jitsu by his grandfather Hélio Gracie.
i don't know