These 5.5 inch-scale figures come with a Prime Armor accessory. Insert a Prime Master figure (Not included. each sold separately) into the accessory, attach it to the figure's chest, and imagine your transformer wields the power of a Prime. The Autobots and Decepticons use Prime Masters to wield the incredible powers of the most legendary bots in the universe: the Primes. Prime Masters carry the spark of a Prime, allowing them to share a Prime's godlike ability with other bots! Anything is possible and everything is at stake when the Power of the Primes is unleashed! Collect Slug, Swoop, Dreadwind, and Jazz!