Hildegarde is a playable character in Dragalia Lost.
While head of an abbey, an oracle compelled her on a mission to the castle to aid the prince. Her austere personality reinforces her faith and helps her impose teachings of the Church on others. She has an abnormal hatred of lies.
Official Description (Valentine's Hildegarde)
Hildegarde has donned an elegant gown for Valentine's, which gives her a mature allure. Supposedly it's the first time she has ever worn one, and more than one person has caught her wistfully staring at herself in a mirror...