Agatha

Agatha is a member of the staff of High Castle and seems to have a position of authority over the five royal children, although the exact nature of her role is not specified.

When the children encounter her in the Secret Country for the first time, she bears little resemblance to the version of her they played in their game: though she still has a "vigorous" voice and gray dress, she is "plump where she should have been bony, young where she should have been old, pretty where she should have been dignified," and has "a great deal of straight, smooth black hair that ought to have been white."

Like Benjamin, Agatha is stern and prone to giving lectures.