Sounds like you have a protector in your supernatural friend and what a good thing that is! (I thought he had shed his chains a while back). My first thought would be, is someone conjuring, playing around with things that are better left alone and you're being drawn into the experience. Maybe creator needs permission to enter your space so he can protect you? That's not an answer to what's going on but it could be a remedy for the problem.
Don't know if I missed some of your post but how did you find out his name was creator? and you didn't say how the incident above ended that night. What are the times and circumstances that these entities appear under? Is that thing on the mirror always there?