Transformers Generations Power of the Primes Prime Master figures are 1.5-inch-scale figures that convert between robot and spark modes and also work with other figures. Attach a Prime Master figure to a Power of the Primes Deluxe, Voyager, or Leader Class figure (each sold separately) and imagine that bot wields the power of the Primes. Please Note: This is an assorted item, 1 Included. Chosen at Random. Styles May Vary.