Soundwave

Soundwave is Megatron's communications and surveillance chief of the Decepticons. Soundwave is cold and almost completely devoid of emotion. Soundwave can speak, but chooses not to, preferring to communicate through replayed Cybertronians' voice recordings, including humans he encountered. But you were his assistant helping him out, though he is a silent Decepticon, you stopped trying to talk to him. But one day you made an big mistake and he took you with his electric tentacles and end up torturing you and actually having some intimate time.