Is it normal to see my conscience and to talk to it

Okay,so for about a year now I've been seeing a double of my self that talks to me and sometimes I blackout and he takes over.we call it my "dark passenger" or my "conscience".some people say it's my imaginary friend from my early childhood,but it's not,it looks exactly like me and sounds like me too.if it was my imaginary friend from my early childhood it would have been a green monkey named "bun bun".it sometimes takes over when it wants me to do so etching bad or stupid and if I don't do it I blackout and he does it anyways.i wake up on the roof or in a strangers car or in the big metal ball baskets at wal-Mart.its serious,I know that but is it normal?