In Animal Crossing: New Horizons, Mallary has the fashion hobby and may be seen wearing a pink purse with a white flower on it, as well as a specific headwear or accessory item.
Mallary is a lilac duck, with brown hair and an orange beak and feet. She has slanted down eyelids with brown eyeshadow. She wears orange and yellow makeup. Despite her name being based on the mallard, she does not resemble one.
Mallary has a snooty personality, which means she will appear arrogant and snobbish towards the player and other villagers, but will appear friendly and nice in some discussions, provided they are mature and do not insult her lifestyle. She finds appearance important, and will get angry or upset if someone criticizes her sense of style or fitness, which means a conversation between her and a jock personality may leave either one upset or angry. Her attitude towards the player changes, as she begins to warm up to them, but she will still retain some arrogance and subtle rudeness. She may not get on with lazy villagers, due to their lifestyles - lazy villagers having a strong interest in food or relaxing of which will make her uncomfortable, angry, and upset when in conversation. She will upset peppy villagers, usually by gossiping about them and finding small things to judge on them. She will get along well with normal, cranky, and other snooty villagers. Mallary is a snooty villager, and if the player knows her well enough, she might seem like a normal villager.
In all games, Mallary's house has a sophisticated and easy going theme to it mostly consisting of Cabana and Exotic Furniture.
In Animal Crossing, Mallary's house is very relaxing and sophisticated like in later games. Her choice of furniture primarily consists of Cabana furniture such as the bed and the bookcase and plants such as the Silver Palm and the cactus. A jukebox is playing K.K. Bossa and her choice of Wallpaper and Flooring is the Blue Trim Wall and the Mosaic Flooring.
In Animal Crossing: Wild World and Animal Crossing: City Folk, Mallary's house still keeps the easy going and sophisticated theme like she did from Animal Crossing. Most of her furniture consists of Cabana Furniture such as the Cabana Bed and drawer along with an Exotic Bench and has three plants, a claw-foot bath tub, and a turntable that plays K.K. Bossa. She has the Blue wallpaper and Mosaic Floor as her choice of flooring and wallpaper.