Crusch Karsten is the head of the Karsten House and a candidate to become the 42nd King of Lugnica.
Crusch is honest, sincere, right, being a type of person who is destined to stand above others, though she has talent and has worked hard to reach where she is now. She is already the head of her family, finishing her work better than her father. She prefers to act herself and has the pride of a warrior. Crusch is also gentle, often believing the false knowledge jokingly told to her by Ferris, and sometimes displays an airheaded side.
Crusch is also dense toward any feelings of love above kindness, often not understanding why certain people behave a certain way, such as when she sometimes didn’t understand Fourier’s behavior. However, this only applies to feelings of love directed towards herself, as she has been shown to comment on the feelings of others.