[Gottverdammt. He always ends up scaring people. Good job, Tyrant of Herpville.]

Very little, except that for all intents and purposes, they do act like perfectly normal young children -- save for their amazing ability to overlook the strange. Many of the odd things that have happened here haven't even registered with them. For instance, one of them recently gained a 'real' parent -- and they obviously were utterly unfazed, and believed that that person had been their parent all along. Their intelligence is obviously artificial; it is merely extremely well-programmed.