I think I've told you before how I constantly hear a voice, every waking moment just about.
Well before I started taking anti-psychotics I believed my voice could directly influence my dreams, they were like his playground. He would put himself in my dreams as my doppelganger and attack me or masquerade himself as other people and attack me.
Once I started taking anti-psychotics my dreams became more benign and very obviously to me were absent of his influence, this annoys my voice greatly.
There's a book about voices and in it there's a chapter dedicated to dreams and how voices have used them to influence their hosts over the years. The author believes dreams are one of the main ways for our voices to communicate with us.