Urban Jungle Self Defense is the only training facility in Houston, certified by the legendary Royce Grace. Urban Jungle continues to uphold its commitment to Gracie Jiu-Jitsu each day by teaching its students the effective and unique self-defense techniques developed by the Gracie family. Tony Torres-Aponte is a licensed professor and certified Royce Gracie Brazilian Jiu-Jitsu (BJJ) black belt.