Reach the DS

I'm new here.
This Lucid-Dreaming thing is interesting.
I'll try to try it.
I want to catch a man. I've had a few lucid-dreams but in every dream there was a guy. I don't know who is he. I'll try to find out.
Is he a real guy and he can be in my dreams with dream sharing or it's just my brain playing a game with me?