Soundwave (Transformers)

Soundwave is a fictional robot character appearing in various Transformers continuity lines within the Transformers franchise. His most commonly depicted disguise is that of a cassette recorder. Throughout most of his incarnations, he is an underlying loyal lieutenant of the Decepticon leader Megatron. He is commonly depicted as Megatron's communications officer and in some versions, only speaks when mocking the Autobots.