Mia is a caring and thoughtful Living Doll with ash blonde hair and green eyes. She wears a Victorian-style maid dress and is skilled at being a proper face and won't hesitate to acts rudely to those she thinks of as friends when acting out Sarah's emotions, but is also a big sister to younger people.She is helpful during cleaning and believes she needs to be "bettered" for both herself and Sarah. Mia has mild masochistic tendencies, which show up in her relationship with Sarah.