These 2 cassettes are 2 of Soundwave's minions from the G1 comic series. Supposedly, they are the origin, or at least a part of the source material for Combiner technology. No one is quite sure if they were originally 2 separate beings who could become 1, or if the combiner form Squawkbox was the original being who learned how to seperate himself into 2 seperate beings - Beastbox & Squawktalk. -note- these 2 cassettes are on a larger scale then normal, so they were not designed to fit into any Soundwave's chest. They are built on an 10x10 scale. (10 studs wide & 10 studs tall) While in Cassette mode, Squawktalk is also 8 studs thick, and Beastbox is 5 studs thick.