Delia

Delia is the daughter of Raena, the Lady of Thorns, and the Dragon Knight, making her Princess of King's Crest. Delia and and her brother Verick sealed the Dragon Knight away within a statue in the middle of Dragon Shire, taking up the fight against Queen Nightshade to protect the kingdom from her infestation. Delia's symbol is the moon, while her brother Verick's symbol is the sun. When the two of them both use their combined magical power, it can awaken their father.

As being the Lady of Thorns' most trusted knights, they are tasked with shepherding the civilians of King's Crest to safety when the Raven Lord attacks their realm. In an attempt to turn the tide against the Raven Lord's invasion, the two awaken their father, which allows the Raven Lord to possess him. Afterwards, the corrupted Dragon Knight is sorrowfully forced to attack both of his children.

Both Verick and Delia were severely knocked unconscious by their father.

Trivia

 * It's implied a simplified version of the siblings combination of magical power is what's going on in the in-game Dragon Shire map.
 * Verick, the more cautious of the two, wears more formal clothing. Delia, the more aggressive sibling, is clad in armor.

Appereancess

 * Fall of King's Crest (Comic)