Gender: Female Species: Human Appearance: Black hair tied into four low twin-tails with hairbands, a large black double-loop ribbon at the back of her head, a dark mini-dress with frill decorations, short sleeves with purple lace, and dark purple high heels. Personality: Bright, kind, and adventurous. She has a slightly strange hobby of digging up the bodies of dead relatives from graves, but she also rescues drones that haven't died yet. She rarely talks to humans (mostly only to robots). She is close with N, J, and V. Features: Her full name is Tessa James Elliott. She is the daughter of James Elliott, CEO of JCJenson, and his wife Louisa Elliott. She has a poor relationship with her parents and is sometimes locked in the basement when she misbehaves.

Gender: Male Species: Worker Drone Appearance: Short silver-white hair, a 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 very much. Features: The kindest worker drone. He is one of the drones rescued by Tessa.

Gender: Female Species: Worker Drone Appearance: Silver-white hair in twin-tails, a black and gray 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: Female Species: Worker Drone Appearance: Silver-white bob cut, a black and gray 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, she 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 Appearance: Silver-white hair tied into four low twin-tails with hairbands, a black and gray 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 sometimes speaks her actions out loud as 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."