1. In a large bowl, mix tuna, egg, bread crumbs, green onions, and garlic. Blend soy sauce, teriyaki sauce, ketchup, sesame oil, and pepper into the mixture.
2. Form the mixture into about 6 patties approximately 1 inch thick.
3. Heat a medium skillet over medium heat. Using cooking spray, fry each patty about 5 minutes on each side.