Delthea is the descendent of a powerful mage and holds great talent in magic, more so than her older brother Luthier. Formerly brainwashed by Duma Faithful necromancer Tatarrah, she was rescued by Alm and the Deliverance. Despite being naturally gifted with magic, Delthea is not interested in training her abilities, using it in Alm's group because she likes helping him. She is bright and cheerful, though a bit selfish. Despite constantly making fun of Luthier, she does love him.