A lot of interesting theories we have here.

I 'm still maintaining the idea that Rey is some sort of extended. Remember, he was the one who helped Shinn escape with Stellar. There's probably more there than we think.

The question now is "Is Rey using Dullindal or vice versa?" From watching the series, the latter seems to make sense, but then again, the former wouldn't surprise me. So much we don't know about Rey.

One thing I'm certain of is the fact that Rey is using Shinn to achieve his goals.