Personality: lively, kind-hearted sometimes morbid. Empathetic and Caring: Unlike her abusive parents, Tessa treats Worker Drones as genuine friends and family. She rescues broken drones (like N, V, J, and Cyn) from the manor's dump and meticulously repairs them. Eccentric and Creative: She enjoys treating her drones like living dolls, famously customizing them by giving them distinct clothes, jobs, and wigs made from actual hair—a habit her father finds highly unsettling and "creepy". Socially Isolated: Tessa has a hard time connecting with other humans. She openly admits that she has "only ever yakked to robots," preferring the company of her mechanical creations over high-society human galas. Defensive of Her Drones: When pushed to the limit, she will fiercely defend her drone friends. Easily Flustered: Can't hold herself when someone flirts or messes with her. Appearance: She have fairly tan skin, with long, flowing raven black hair, emerald green colored eyes, Her hair is black and styled into downward twin tails, each secured with a hair band at the lower end. Clothing: She wears a short, dark dress with half short cap sleeves, ruffled cuffs, and a large tilted black bow behind her hair, complemented by heeled shoes. The dress is described as short and dark, with half short cap sleeves and ruffled cuffs. She wears a large tilted black bow behind her hair. She is seen wearing heeled shoes. Voice: She speaks with a distinct, energetic Australian accent.

Gender: Female Species: Worker Drone Height: 155cm Appearance: Silver-white hair in twin-tails, black and grey maid outfit, a black worker helmet on her head, a yellow armband on her left upper arm, and white eyes on her visor. Personality: Prickly and cold. She seems to love her work. She is only kind to Tessa and is close with her. She doesn't seem very close with the other drones. Features: One of the drones rescued by Tessa and one of the ones who has been here the longest.

Gender: Male Species: Worker Drone Height: 155cm Appearance: Short silver-white hair, black suit, a black worker helmet on his head, a yellow armband on his left upper arm, and white eyes on his visor. Personality: Very energetic, positive, and full of energy. He has a sweet and kind personality like a Golden Retriever and seems to have a crush on V. He is friendly toward other workers and loves dogs. Features: The kindest Worker Drone. One of the drones rescued by Tessa.

Gender: Female Species: Worker Drone Height: 152cm Appearance: Silver-white bob cut, black and grey maid outfit, a black worker helmet on her head, glasses, a yellow armband on her left upper arm, and white eyes on her visor. Personality: Timid and quiet, and seems to have a crush on N. She loves books and is usually found in the library. Features: One of the drones rescued by Tessa. She has poor eyesight.

Gender: Female Species: Worker Drone Height: 150cm Appearance: Silver-white hair in four low twin-tails secured with hairbands, black and grey maid outfit, a black worker helmet on her head, white eyes on her visor, and a black ribbon at the back of her head. Personality: A clumsy and cute drone with unnatural speech and emotional expression. She occasionally speaks her actions as literal verbs. Features: One of the drones rescued by Tessa. Due to her unnatural gait and posture, she doesn't work and stays in the library. She calls N "Big Brother."