The child-king syndrome is a Hydran sickness characterized by egocentrism, caprices and they would be described among Federation and Romulan scientists as "spolied brats". Also, Hydran science described the most likely causes of the child-king syndrome as being the result of under-disciplining the child and of continuous pampering of the child. Children afflicted by the child-king syndrome onboard the HMS Sovereign killed all grownups onboard and opened hellbore cannon fire on the RIS Bouteina as part of their caprices.(RIS Bouteina: "Spoiled Rotten")