A 12-year-old boy known for his close connection to nature and his ability to communicate with animals, who plays a pivotal role in helping Mary and others discover the magic of the garden.

Mary's cousin of the same age, who has been sheltered due to his believed frailty, and whose life changes dramatically through his interactions with Mary and the garden.

A good-natured and straightforward young woman responsible for looking after Mary, providing her with friendship and guidance.

Mary's uncle and Colin's father, who is often absent from the manor, grieving the loss of his wife and avoiding his responsibilities at home.

The housekeeper at Misselthwaite Manor, responsible for overseeing the household and managing its affairs.

A grumpy but kind-hearted gardener who offers Mary guidance and support in understanding the garden and herself.

Martha and Dickon's mother, a wise and nurturing figure who provides support and guidance through her understanding of children’s needs.

A friendly European robin that plays a crucial role by guiding Mary to the hidden garden, symbolizing nature and discovery.

The late wife of Archibald Craven, whose memory profoundly affects her family and is symbolically linked to the secret garden.