Bullywolf.com Team Robert Gravél has been working with children for over 30 years and is the owner of Martial Arts America in North Babylon, NY. He is a Master Instructor in the Martial Arts and during his many years of teaching he has developed a practical system to help children cope with the dangers and threats of being bullied. Tommy Chang is the owner and president of Black Belt World Canada, one of the largest schools in all of Canada. He is a certified Master Instructor of WTF Canada and was awarded Coach of The Year, 1999 Canadian Jr. Nationals. Tommy Chang has trained many leading actors for film and television and has personally trained with the Jackie Chan Stunt Team.