An orphan boy who struggles with self-esteem and reading, Luke becomes a pivotal figure in Jack's life when Jack saves him. Their mutual bond leads to significant changes for both characters.

A wise traveler who leads a life off the land with his goats, serving as a mentor figure to Jack. His kindness and simplicity impact Jack's journey in various ways.

A harsh circus master who exploits animals for profit, representing the darker aspects of Jack's experiences. His interactions with the animals offer a critique of animal mistreatment.

A dog at the circus who, despite difficult circumstances, maintains a sense of community and loyalty. She showcases determination and the prioritization of others' well-being over her own desires.