[LadyLycanthrope]

That's exactly how I discovered the being before. I had a light on and I saw the shadow move. Since then I have even seen it in broad daylight. I had another encounter with it recently..it appearing at the end of my bed and just standing there before disappearing and that was with it being semi-dark in my room.

First off it is not evil. That is your thinking saying this.

Next you say you feel threatened, again this is just your feelings. How is this thing actually threatening you? Its not is it? Thats just your projection.

I am not denying that you see and experience this. I fully believe that you do.
Its just that you need to separate your mental and emotional stuff from what is actaully happening.

What is actually happening is that you see something unusual, then you have negative mental and emotional reactions which are entirely yours.
The good thing is that they are yours to change too.

I know this will be easier said than done, but if you do not want this "person" in your room, tell it to leave. You have full control of your room. It is an intelligent entity, it should abide by your wishes.