Cameron was born in Newport Beach, California. Diffley moved to Henderson, Nevada where he has lived since the age of 8. Diffley grew up playing sports such as baseball, basketball and soccer. He became involved in the martial arts at a young age training in Karate, Tae Kwon Do, Jeet Kune Do, and Kickboxing. Diffley was introduced to Brazilian Jiu Jitsu by a friend who was a student of
Ricardo Pires at the Las Vegas Combat Club.