Strologist Mona Megistus is an Astrologist of great skill and equally-great pride. Mona has taken up residence in Mondstadt to avoid incurring the wrath of ‘her master’ after unwittingly reading the latter’s diary. She is very knowledgeable in this subject in part and respects, yet also fears her master at the same time. She combines her astrology skills with hydromancy, which makes her a well-known, if still growing astrologist. In part due to her astrology, Mona can tell whether or not a person is lying, can sense their intentions from a single glance, being capable of seeing their fate and is able to accurately deduce a person's traits just from knowing what their constellation is.