Depicted as Henry's mentor and a prominent transcendentalist, he articulates the ideas of nonconformity but struggles to practice them in the same way Henry does.

Henry's cellmate, whose initial skepticism of Henry turns into respect as Henry teaches him how to write his name and advocates for his rights.

Henry’s older brother who provides emotional support and understanding, acting as a moderating influence on Henry’s more rigid principles.

Waldo’s wife, depicted as intelligent and traditional, who struggles with her attraction to Henry while maintaining loyalty to her husband.

A Black man who seeks freedom in the North, and whose interactions with Henry highlight the latter's commitment to individual respect and liberty.