One of the more enduring roles in human culture is that of the usurper. We have usurpers back home, of course, and they get a great deal of attention during the yearly grooming competition when we choose our spokesmodels. But on this planet there is no yearly grooming competition and usurpers are those who attempt to steal the position of royalty. Poorly, I know. But I will try.
Royalty are like flebbishes in that they get that way from birth.
But unlike a flebbish, a royal has to be decanted from a particular incubator. Otherwise, what you get is a usurper. To the untrained eye, there s no real difference between a usurper and a royal. But the royals can always spot the usurpers, and that s what s important. One method of attaining the royal throne without being called a usurper is for an offspring or blood relation to assist the current royalty in becoming deceased.