Timothy and Levi's mother, who struggles to provide for her family due to Levi's medical needs. She is depicted as devoted and overwhelmed, doing her best under difficult conditions.

Timothy’s infant brother with a medical condition requiring a tracheotomy tube, which impacts his development. He communicates with sign language and shares a close bond with Timothy.

Timothy’s parole officer, initially strict but becomes more compassionate over time. He supports Timothy through acts of kindness and encouragement.

Timothy’s psychologist who oversees his journal and helps him navigate his feelings. She becomes empathetic to his situation and aids in his efforts to support his brother.

Timothy’s friend and neighbor who enjoys playing baseball with him. His life contrasts with Timothy's due to a lively family environment rather than medical struggles.

José’s sister, whom Timothy has a crush on. She supports Timothy quietly, offering help and companionship when he is overwhelmed.

One of Levi’s nurses who connects with both Levi and Timothy, teaching them sign language. She is kind and maternal in her interactions.

The nurse who replaces Marisol, characterized by her unkindness toward Levi. She is depicted as unsympathetic to Levi’s needs.