Raven (and Qrow?) evil?

I'm almost certain that this has already been discussed, so sorry for being slow. Anyway, I realised that Raven's portals are the same as the orb which can be seen in the openings, significantly in the first one, where it is shown to attack team RWBY. In the third opening, it is shown to come from Qrow's sword. Then add in the fact that Raven disappeared years ago and doesn't seem to have aged, and wears a grimm mask, I can't help but feel that she may be the cause of the grimm arriving. Either that or she herself has become a grimm. From the amount the orb is shown in the openings, and that it is clearly some form of antagonist, I think that either Raven is the final villain, or that she is at least linked with what I am assuming to be an approaching disaster.

The orb itself is also shown to almost replace the moon. It could therefore be related to the destruction of the moon. One possibility is that Qrow's team were directly involved in the disaster that destroyed the moon, and Raven may well have been some kind of sacrifice as a result.

I don't know if Cinder and her group have anything to do with Raven and the grimm as they haven't shown any kind of partnership with her. The only thing I have noticed is that Neo seems to recognise her, and knows to run away quickly. I'm not sure if this is due to her simply realising that Raven was powerful or not though. It just seemed a bit too uncharacteristic for Neo to run away like that just after blocking one attack. Therefore, I doubt that Cinder and Raven are working together as threatening one of Cinder's colleagues would not be necessary for her to make Neo leave if they were working together. It could just be that Raven is protective of her daughter and will become very angry if someone tries to kill her, to the point of risking a break in alliances. At the most, I think Cinder could be attempting to use Raven for her own purposes, without Raven herself knowing.

Alternatively, as the orb was shown to come from Qrow's sword in opening 3, and that he and Raven are related, it could be that he is also still working with Raven.

Ultimately, Raven is probably the evil grimm queen. Qrow may be evil and working with her, and Cinder is doing, well, something.