An idealistic novelist, Penn embraces domestic life to support his family, providing a nurturing environment for Poppy's personal journey.

A tender-hearted and intelligent child, Poppy navigates her gender identity with the support of her family, seeking to fully express herself.

Poppy's best friend and neighbor who challenges traditional gender roles; her friendship with Poppy undergoes trials but ultimately endures.

Poppy’s eldest brother who struggles with the family's focus on Poppy, leading him to seek understanding and expression through writing.

An unconventional child psychologist whose unique methods and humor help guide Rosie and Penn through Poppy's developmental transitions.

Rosie's mother and Poppy's strong advocate, who supports Poppy’s individuality and provides wisdom and guidance to Rosie about family dynamics.