An only child and new in town, Leslie is confident, imaginative, and forms a pivotal friendship with Jess, sharing adventures and challenges in their made-up kingdom.

Jess’s seven-year-old sister, who admires him deeply and often seeks his attention, displaying innocence and loyalty throughout their sibling interactions.

The music teacher at Jess's school who encourages his artistic talent, stands out with her modern approach, and treats Jess with kindness and respect.

Jess's father, a hardworking man who grapples with job insecurity and provides tough but ultimately supportive guidance to Jess.

Jess's mother, a weary woman managing a large family on a limited budget, who often directs her frustrations at Jess but shows moments of warmth.

Leslie’s well-off, educated parents who embrace a simple life, support Leslie's creativity, and offer positive encouragement for Jess.

Jess and Leslie's fifth-grade teacher, initially perceived as stern but later reveals her supportive nature, especially during challenging times.

Jess’s older sisters, seen mostly as a unit, who frequently manipulate situations to their advantage and tease Jess about his interests and friendships.

The youngest Aarons sibling, a four-year-old who easily garners sympathy from her mother and occasionally causes minor irritations for her older siblings.