Not to be confused with Gerta, also known as the "herb woman".
Greta is an old female servant at the First Castle. She serves Queen Harmony and is loosely affiliated with the Unseen. She does various tasks such as receive messages, admit people to Harmony's chamber, and make meals. She is committed to formality and is very loyal. In Time Jumpers, she accused Cole and his group of kidnapping the High King, Harmony, and their daughters. They eventually bring her to her sister's farm in the Ellowine countryside.