A family friend living with Merit’s family who supports her while harboring his own difficult past. He is a catalyst for Merit’s personal growth.

Merit's older brother who is academically inclined and highly disciplined. He grapples with personal issues and evolves in his relationships with the family.

Merit’s identical twin sister who is outgoing and academically successful. She copes with past trauma through her unique approach to relationships.

The father of Merit, Honor, Utah, and Moby, who is involved in a complex family dynamic. He struggles with being open about difficult truths.

The stepmother to Honor, Merit, and Utah, and mother to Moby. She works hard to support the family and navigates her role amidst the children's initial resentment.

Barnaby’s first wife and the mother of Merit, Honor, and Utah, who faces mental health challenges. She is portrayed as reclusive due to her personal struggles.

Victoria’s unconventional brother who comes to stay with the family. He is characterized by his distinct style and helps open Merit’s mind to broader perspectives.