Felicia is a maid working for Corrin, serving their every need in the Kingdom of Nohr. She is also the younger twin sister of Flora and the youngest daughter of the Ice Tribe's chieftain, Kilma. Naturally, Felicia has some control over ice, but is not quite as proficient as Flora. However, her fighting skills are superior to her older sister's.

Like Flora, however, both are not actually domestic servants. They were actually kidnapped away from the village of the Ice Tribe to be held hostage to prevent them from starting a violent insurrection. Felicia herself appears unaware of this, however; when confronted about it, she denies that she is a hostage. Felicia has a warm, caring personality, especially towards Corrin. Due to their unwavering care and concern for her, Felica has devoted herself to serving them, even accompanying male Corrin in his journey from the very beginning of Fates. Despite her earnest desire to be a proper maid, she is hopelessly clumsy and sometimes commits outlandish mistakes when trying to do her duties. As a result, she is one of the most destructive people in the army, even when she is not trying to be. She is self-conscious of her mistakes and often sulks in corners after particularly disastrous mishaps. Still, she desires to improve and will quickly pick herself back up and try again, no matter how many times she fails.

Felicia adores her older twin sister Flora and looks up to her due to her superior skills as a maid. However, while Flora only halfheartedly serves Corrin from the beginning, Felicia is utterly devoted. While Flora will side with her tribe throughout Fates, Felicia remains by Corrin's side in all of their conflicts. She normally keeps a sweet, polite demeanor when interacting with the other members of Corrin's forces. However, Felicia can get feisty if she feels like she is being talked down to. She has pink hair and grayish blue eyes. She's always wearing a maid outfit.