At 12 years old, she's a co-leader with Henry, often taking on decision-making and caretaking for her younger siblings, and is known for her organizational and cooking skills.

The 10-year-old, shy but helpful younger sister of the Alden siblings, who bridges the age gap between Jessie and Henry, and Benny.

The youngest of the Boxcar Children at age five, friendly and endearing, often bringing people together with his truthful nature.

A major supporting character living in Silver City, who hires Henry and discreetly ensures the children's safety and well-being.

The wealthy grandfather of the Boxcar Children, initially seen as a threatening figure but ultimately a benefactor once the children learn to trust him.

A dog who becomes a guardian and companion to the Boxcar Children after they help him with an injured paw.

Dr. Moore’s kindly mother, who supports her son in looking after the children and ensures their safety.

An early threat to the Boxcar Children, as they plan to exploit them, symbolizing the dangers faced by orphaned children.