Also known as: アヤ・ドレヴィス
The main protagonist and the player character of Mad Father. She is the only child of Monika and Alfred Drevis.
Aya is 11 years old. She has long, black hair with Blunt Bangs. Her normal outfit consists of a blue, puff sleeved ankle-length dress, with a white Apron worn over it, and tied in a bow at the back. As accessories she wears a Necklace with a gold pendant, and a big pink bow on the back of her head.