From what I can tell, LunarRay is used to bolster his position and act as a foil in many discussions around here, but "they" also talk back and forth a great deal too. Go and look at their posts, going back for years, LunarRay only posts after Moonbeam and only in the same threads, acting in support of the main account, or even to give him encouragement, to look like he has someone to watch his back. Generally, it's a posting flurry: Moonie, Moonie, Lunar, Moonie, Lunar, etc.. often just a minute or two apart, again, to give him momentum or support in a discussion.
No shit here, this is serious, I'm actually concerned about his sanity. That's a very long time to keep that going, and I'm sure it's all a part of how he engages people on this forum. As I told him, I don't care what he does, but at the same time I'm not going to play along and address them separately, since I'm now sure of what's going on.