Angelica was born in the Ainsworth family and the eldest daughter of Zachary Ainsworth. At some point, she passed away and was later created as a doll. She was created by the Ainsworth family to act as their servant and warrior. But in the end, she was defeated by Kuro and Shirou Emiya, Illya then took her with them, since she can't leave her alone.
Angelica has lost 90% of her emotions, thus she appears to be calm, and serious person. She learned to imitate human-like emotions. She is noted to have an exceptionally strong mentality, being able to freely use Gilgamesh's class card without falling victim to the influence of Gilgamesh's ego like Miyu Edelfelt did.
Unlike Beatrice Flowerchild, she showed great respect to Miyu when they had come to fetch her, although that didn't prevent her from stopping Beatrice's abuse of Miyu.
Fate/kaleid liner PRISMA☆ILLYAEdit
Her primary weapon was the Archer Class Card holding half of Gilgamesh's spirit. As Gilgamesh later explained, his card held the majority of his treasury which granted Angelica an almost infinite arsenal.
Install mode allowed Angelica to fully utilized the Gate of Babylon in typical fashion via rains of weapons upon the enemies. Against Gilgamesh, she attempted to restrain him with Enkidu, although the chain's loyalty to it's true master allowed Gilgamesh to easily take it back from her.
During her battle with Gilgamesh, she switched tactics by making use of the Anonymous Class Cards and the Flair Air spell to prevent Gilgamesh from taking back more of his weapons.