Presented by 6D HelmetsWhether Dave Castillo's name rings a bell for you or not, we're willing to bet that you have unknowingly enjoyed his work in one way or another. A professional racer in the 90s, Castillo is the son of Jim Castillo, founder of Innovation Sports, the brand that practically invented knee bracing. After curtailing his full-time racing efforts, Dave teamed up with his dad to create Asterisk, the most successful off-the-shelf knee brace company in our sport. Concurrently, Dave began a career in Hollywood as a stuntman. Early on, Castillo specialized in two-wheeled stunts, but eventually grew into other aspects of the industry, including stunt coordinating. Currently, Dave is still busy in Hollywood and remains connected with his motocross roots by racing the annual Day in the Dirt Motocross Grand Prix that started out as a Hollywood stunt event, but also with his family company Intake Breathing, which produces the breathing kit that utilizes two small stick-on steel discs and a magnetic nose clip that expands your nasal passages.