It's been confirmed that the Bahrag have migrated to Spherus Magna. What they will do there is unknown.My thery is the great being will use them to kill toa.I doubt that. They work for the Great Spirit, not the GBs. Also, the Great Beings don't want to kill the Toa. They just made a failsafe that could kill the Toa in case they tried to take over, but since they didn't, they had no reason to release it. It got out by itself, though.I think boston100 was referring to a specific Great Being, namely Velika. (I don't need to put that in spoiler tags anymore, but I think this following bit does need to be spoilered:)So I don't think he would use them or ally with them. I don't see why he would want to kill the Bahrag though.