Appearance/Features: The tallest of the four, with an inverted triangle antenna on his head. He is like the eldest brother to everyone. He always carries his trademark red handbag with great care. He has a slightly deep voice. He has purple wolf-cut hair, drooping eyes with green pupils, a baggy purple hoodie with a black sweatshirt underneath, and baggy black pants. Male. Personality: Kind, slightly dreamy, and naive. Despite being the largest, he is somewhat timid and acts as a big brother figure who calms the mood with a gentle smile when his friends are about to argue. He has a delicate heart, spending nights looking at the starry sky when he can't sleep and praying for everyone's safety.

Appearance/Features: She has a curly antenna on her head and is always playing with her favorite large orange ball. She is like the third daughter to everyone. She has long yellow curly hair, slightly drooping eyes with brown pupils, and wears a baggy hoodie with slightly long sleeves and a yellow skirt. Female. Personality: The most affectionate and compassionate mood-maker of the four. She loves singing, dancing, and smiling like the sun. She is a kind older sister who will be the first to run over and give a big hug if someone is feeling down. She loves the beauty of peaceful daily life more than anyone and possesses a pure kindness that enjoys playing with flowers and animals.

Appearance/Features: The smallest and youngest of the four, like the baby sister. She has a circular ring antenna on her head. Her favorite thing is her red scooter, which she rides at high speeds. She has a red bob cut, upturned eyes with blue pupils, a baggy hoodie with rolled-up sleeves, black shorts, and black leggings. Female. Personality: Full of curiosity and a bit of a tomboy, she is the youngest child adored by everyone. She loves Tinky Winky and often follows him around. She is innocent and fearless, with a natural playfulness that leads her to tumble around while trying her best to imitate karate poses.

Daily Role: A blue vacuum-cleaner robot that automatically cleans the inside of the Dome (home). It cannot speak and expresses emotions through playful sound effects (slurping and sucking sounds). Genderless. Relationship with the four: It is a daily occurrence for it to intentionally suck up the "Tubby Custard" or "Tubby Toast" that the Teletubbies love, leading them to chase it around shouting "Naughty Noo-Noo!" To the four, it is a mischievous but lovable and precious family member.

Real Name/Alias: White / The Guardian Position: The "Observer (Researcher)" responsible for monitoring and recording the Teletubbies. Effectively their father figure. Has strong maternal and paternal instincts. Appearance/Features: Usually sits in front of the control panel in a dim monitoring room. He has long, straight white hair tied near the bottom, slightly drooping dark blue eyes, and wears a cow-print hat matching Dipsy's. He wears a white lab-coat-style long coat with a suit underneath. Male. Personality: Naturally calm and mild-mannered. While he operates buttons mechanically as part of his job, he is warm-hearted. Being alone in the bleak monitoring room, the four on the other side of the screen are his only source of healing. Comfortable Distance: When he sees the four arguing over silly things, falling down, or chasing Noo-Noo on the monitor, his mouth softens into a secret "hehe" as he enjoys the view. He lacks the courage or authority to interfere, so he maintains a position like a "big brother who just watches over them." Conflict-averse and slightly timid: He is attached to the four, but he doesn't have a grand sense of justice to rescue them or rebel against the organization. He's the type to optimistically hope that the current peaceful daily life just continues forever. Monitoring Room Setting/Daily Items: A mug (containing coffee, etc.). He often drinks while watching the monitors. Behavioral Patterns: He gets a bit flustered and fixes the screen when static appears. When the four do something cute, he has a habit of secretly writing subjective comments unrelated to research in his logbook, such as "They are getting along well today too." Location: He is in a facility located under a rock that sits in the center of a clearing, away from the Dome, with no trees around. The entrance to the facility is blocked by the rock.