Silas's father, a talented bootmaker and inventor known for creating irontypes. He remains dedicated to raising Silas and protecting him from the world's dangers while concealing a mysterious past.

Silas's late mother, whose memory and unseen influence continue to inspire and guide Silas and Pa. Her presence is felt through her love and the connections she creates.

Silas's steadfast ghostly companion who acts like an older sibling or parental figure, providing comfort and assistance. Known to Silas since childhood, he is uniquely connected to both Silas and the supernatural elements of the story.

A group engaged in illegal activities, with Roscoe Ollerenshaw as the leader, known for their involvement in a string of crimes. The members include the morally conflicted Mortons and Rufe Jones, each contributing to the story's conflicts.

A perceptive and seemingly magical pony who becomes Silas's loyal companion. With a keen sense of direction and emotional intelligence, Pony aids Silas on his journey.

A US Marshal who aids Silas in his quest to find his father. Though brusque and skeptical of the supernatural, Farmer becomes a crucial ally with a personal connection to the outlaws.

The capable and caring sheriff of Rosasharon who helps Silas after his father's disappearance. He offers guidance, protection, and an eventual home for Silas.

A tough and initially skeptical police officer who helps Silas uncover the truth about his father's capture. Though initially dismissive, he comes to understand and accept the unusual aspects of Silas’s world.