Matthews is tall with dark blonde hair and golden brown eyes. She wears pale blue eye shadow and pink lipstick. Wearing a butler uniform, she wears a white wing collar dress shirt underneath a red vest and a black morning coat with golden buttons, a red bow tie, white gloves, black trousers, and black dress shoes.
Matthews is proper and serious, keeping things orderly and making sure others know the facts. At the same time, she is very kind and caring, being concerned when Tony goes missing and forgiving Fredricks for framing her due to jealousy by promoting him to co-butler with her, as opposed to her own butler.