Isolde is a Holy Knight of Liones, serving under the Tristan Platoon of prince Tristan Liones.
Isolde takes her duty as a Holy Knight seriously and willingly protects the kingdom and the royal family, especially Tristan, mercilessly attacking anyone who threatens her companions.
However, Isolde has a very negative opinion about her attractiveness as a woman, because of her great height, something that caused her to be teased by other people. It is shown that she is deeply in love with Tristan, who is the only person who has not mocked or teased her, even gifting Isolde with his ribbon. She can also be quite critical of herself when it comes to her feelings for him.
But despite her serious personality, Isolde is also a sensitive, innocent and kind-hearted girl who cares a lot about others.
