When these legends class 3.75" figures are in vechicle mode, Prime Master (Not included. Each sold separately) figures can ride on the figure's back! The Autobots and Decepticons use Prime Masters to wield the incredible powers of the legendary bots who shaped the universe: the Primes. Prime Masters carry the spark of a Prime, allowing them to share a Prime's godlike ability with other bots. Collect Slash, Beachcomber, Windcharger, and Skrapnel!