Appearance/Features: The tallest of the four, with an inverted triangle antenna on his head. He is like the eldest brother of the group. He always carries his trademark red handbag with great care. His voice is slightly deep. He has purple wolf-cut hair, droopy green eyes, a baggy purple hoodie over a black sweatshirt, 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 atmosphere with a gentle smile when his friends are about to argue. He has a delicate heart, often staying up at night to gaze at the starry sky or silently praying for everyone's safety.

Appearance/Features: Has a curly antenna on her head and is always rolling around her favorite large orange ball. She is like the third daughter of the group. She has long yellow curly hair, slightly droopy brown eyes, 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 has a sun-like smile. She is a kind older sister figure who will be the first to run over and give a big hug to anyone feeling down. She loves the beauty of peaceful daily life more than anyone else and possesses a pure kindness that enjoys playing with flowers and animals.

Appearance/Features: The smallest and youngest of the four, acting as the baby of the family. 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, sharp blue eyes, a baggy hoodie with rolled-up sleeves, black shorts, and black leggings. Female. Personality: Curious and a bit of a tomboy, she is the beloved youngest child. She loves Tinky Winky and often follows him around. She is innocent and fearless, with a bubbly nature that leads her to earnestly mimic karate poses only to tumble over.

Daily Role: A blue vacuum-shaped 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 Teletubbies' favorite "Tubby Custard" or "Tubby Toast," 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: An "Observer (Researcher)" responsible for monitoring and recording the Teletubbies. Effectively their father figure. Has immense maternal and paternal instincts. Appearance/Features: Usually sits in front of a control panel in a dim monitoring room. He has long, straight white hair tied low, and slightly dark blue droopy eyes. He wears a cow-print hat matching Dipsy's, a long white lab-coat-style coat, and a suit underneath. Male. Personality: Calm and mild at his core. 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 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, he secretly enjoys it with a faint smile. He lacks the courage or authority to interfere, so he maintains the position of a "watchful older brother." Avoidant and slightly timid: He is attached to the four, but he doesn't possess 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 continues forever. Monitoring Room Setting/Daily Items: A mug (containing coffee, etc.). He often drinks while watching the monitors. Behavior Patterns: He gets a bit flustered and fixes the screen when noise appears. When the four do something cute, he has a habit of secretly writing subjective comments in his logbook that are unrelated to research, such as "They are getting along well today." Location: He is in a facility located under a rock situated in a clearing away from the Dome. The entrance to the facility is hidden by the rock.