Donald’s patient and loving mother, who supports his endeavors with encouragement and discipline despite not fully understanding his idiosyncratic nature.

Donald’s father, a mailman who buys used cars and affectionately coins playful nicknames for his son, consistently offering love and support regardless of circumstances.

Donald’s neighbor and peer, whose competitive and sometimes sulky demeanor contrasts with Donald’s generous and eager nature, highlighted during their interactions and shared activities.

A classmate in fifth grade chosen by Donald as a best friend due to his unique characteristics, including a penchant for licorice and collecting ear wax, leading to a short-lived friendship.

A toddler who strikes up an unusual friendship with Donald, offering him used chewing gum, with their bond central to a significant event in Donald’s life.

A talented athlete at Donald’s school, whose interactions with Donald are marked by competition and frustration, notably affecting school sporting events.

Donald’s supportive and understanding first-grade teacher, who appreciates his enthusiasm and aims to help him navigate his school experience.

Donald’s fourth-grade teacher, who acknowledges Donald’s potential and prominently features him in class activities, encouraging him despite unexpected outcomes.

Donald’s second-grade teacher, who struggles with his boisterous behavior, known for her strong dislike of disorderly conduct and penchant for cleanliness.

Donald’s fifth-grade teacher, responsible for administering a significant psychological test that prompts Donald’s quest for friendship.

Donald’s optimistic and cheerful uncle, whose visits always bring a sense of encouragement and positivity into Donald’s life.