Luca is the daughter of King Giott and princess of the Dwarves. She is most notable as the creator of two mechanical dolls, Calca and Brina, which Golbez turns into a monster called Calcobrenas that attack the party. At first Luca seems untrusting of Cecil, but like the other dwarves, she learns to accept them. Under the rule of Luca and her father, the Dwarves help assist the party in their battles in the Underworld.