Crusch Karsten is the Matriarch of House Karsten and a candidate to become the 42nd King of Lugnica.

While normally calm and serious, 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. Like her mother Helena Karsten, she is shown to be ruthless and reckless.