As for the maestro? The way I see it, we have a few options. The ones that would be a good story are, power corrupts. He has taken over a few humans and each time he is willing to do more to them. First he gave miranda a little nudge, then he outright made the old king and queen kill each other, now he is just flat out dominating the maestro. Option 2 is the beast did it. It has powers, it has way less morals, and wouldnt have any issue with mind controlling anything it doesnt get to kill. The last option, which could work, is the maestro ISNT under his control, he willingly joined up.
On the other hand, mookie may have forgotten his own rules, after all, its been longer than a week and he is easily distracted by shiny objects.