So why is Wrathion the black "Prince"? Shouldn't he be the king? And if any sane Blackbrood is left to make claim to the throne, who is he/she?
Also, "Auntie Onixia" leads me to believe he is Nefarian's or some other dragon's son. Not Neltharion's.
PS: I really hope it isn't a case of "Disney Princess" syndrome, where it is simply Prince/Princess to sound cuter...