Since I was around 9 years old, I've always had a "dark", but not necessarily evil, presence follow me around. It usually manifests in times of personal crisis. It's a decently tall figure, and there's no features I can make out other than it looks human-like. I also have lots of dreams of demons, but they're fuzzy so there's not much I can tell you from that. Either way, I've recently converted from christianity to theistic satanism so I was thinking now was a better time than ever to discover who this demon is and see what its purpose is.