A poltergeist.

It manifests in front of you and while it seems unsure of where to look, it's hard to feel all that mad at it.The tiny blue ghost and it's wide black eyes, don't change the fact that poltergeist's are evil bastards. They are still however, some of the weakest and most harmless looking creatures so it's difficult for anyone to take them seriously. They look more like one of Alex's fridge drawings from when he was little, rather than an evil and malevolent ****.

"Now. My memory is a little rusty, but did I give you a name?" It's hard to tell if the ghost is surprised or not from it's empty eyes and mouth. "You said it wasn't necessary, milady." It's still difficult to tell where exactly the spirit is looking, as if it's torn between meeting your eyes or looking elsewhere at your body and completely unsure of which would be worse. "I see. I'm not quite what I used to be. I know that. Did I mention what exactly I had in mind?"

"...you said that explaining your plans before they're complete is bound to get them screwed over." That does sound like something you'd say. "Don't shoot the messenger." The ghost inches back, half expecting you to not react well. Really, this is all just confusing despite more it making sense than it should.

This spirit. It listens to you. It has to. Because of being a reaper? Or something else. You already understand things about this creature without having seen it before. "Refresh my memory. You are't the only little follower of mine, are you?" You can sense the ghost's surprise despite it's face not moving. "No...how much of your memory are you missing?"

"....it's difficult to say. Why are you here in the first place?" If your memories were back up to speed, then you'd probably realize the mistake of giving a demon that lives for chaos any opening. "I felt it. The...spark. Whatever you call it, resurfacing in your body. You wanted one of us close just for when that happened but not everybody." That sounds completely possible.

"You wanted me because you wanted your most trusted helper." No. That's wrong. "I might not remember the details, but I'm not dumber than I was before. I hope you realize, even with only the vaguest recollection of my powers, I can still kill you at least thirty times over." The poltergeist inches back again. "Of course. That's why I'd never dream of trying to go against you, my lady."

This ghost is not as clever as he thinks he is. Clearly, he believes he can us the memory lapse to his advantage. If only he were smarter about it, maybe he could. Still. He does however likely know more than you do at this point, so humoring whatever stupid things he comes up with to a small degree, couldn't hurt that much. Possibly. Or just threaten him back in line. He's too weak to do much about it. Either sounds fine.