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Mackenzie Dern, a purple belt in Brazilian Jiu-Jitsu, began learning the martial art when she was just 3 years old. Her training started under her black belt father, Megaton Dias in Phoenix, Arizona and continued in kid’s classes, taught by her stepmother, Luka Dias, also a black belt competitor. Mackenzie competed in the juvenile division and then moved to the adult division at 14 years old.