Chris - Considering that all our dream images are created out of our experience, I would say he is a part of you and not an external character. See
http://dreamhawk.com/dream-encyclopedia/association-of-ideas-with-dreams/#WorkingThat he is larger than you needn't mean he is looking down on you or that you feel smaller, large often means important, a big thing in your life.
He is naked - no pretence. Your dreams are rambling and disconnected, can mean, like the voice suggested, "I have an addition to show you." If the addition is something that has never been a part of your conscious life, then it has to cast around for ways to make it into your awareness. It will take time. Be patient, we have forever.
A quotation from a man: At this point my body was expressing a lot of struggle and movement. I realised that what is emerging is almost bigger than myself. It is difficult to let it into my life. It is almost like my skin is ready to split open. There are a lot of a growing pains, or birth pains, because I am giving birth to myself again. I am actually becoming somebody different to who I was in the past, and it is quite a difficult process. I feel the pain of giving birth to that new self.
Tony