This fourth heat is an explosive display of spinners as old favourites take on new hopefuls. Competing through brutal group battles and fierce head to heads for a place in the heat final are Supernova, Frostbite, Wyrm, High 5, Crushtacean, Ironside 3, Pulsar and Apex. They must dodge the arena hazards and the menacing new twist as house robots are being unleashed to attack competitors and inflict maximum damage. Let battle commence!