Sam's adventurous and inventive younger sister, who shares his love of nature and animals. Her mysterious mission adds intrigue to the story as she leaves clues for Sam.

An English teacher and friend of Sam’s, who helps him with chores and spends holidays with him on the mountain. Bando enjoys nature but also appreciates the comforts of the modern world.

Bando’s wife, who works as a lawyer and balances life between the primitive cabin and modern conveniences. Her perspective encourages the creation of conveniences in their natural setting.

The librarian from the town of Delhi, who influences Sam through her shared knowledge and presence during important projects. Her insights inspire key events in the story.