Born on January 24, 1937, Nobisuke Nobi endured the hardships of wartime Japan, surviving labor demands and evacuation to the countryside. His childhood was marked by profound emotional turmoil, including a moment he nearly drowned himself in despair—a crisis interrupted by a time-traveling Nobita and Doraemon disguised as a girl offering chocolate, an encounter he later cherished as his first love.

In his youth, Nobisuke’s artistic talent drew a wealthy patron’s offer to fund his career in exchange for marrying the man’s daughter, Kaniko Kanimitsu. He rejected the arrangement, choosing independence over compromise. He eventually built a family with Tamako Kataoka, their son Nobita inheriting his relaxed demeanor and occasional clumsiness.

As a company manager, Nobisuke balances corporate duties with hobbies like golf, fishing, painting, and camera collecting. Though calm and patient, he battles persistent habits like smoking and overeating, with repeated attempts to quit proving futile. His artistic flair periodically reemerges, recalling his near-pursuit of painting professionally and evident in crafts like constructing Doraemon-shaped kites.

His parenting blends gentle guidance with tempered patience, contrasting Tamako’s stricter approach. Raised by a stern father and compassionate mother, he encourages Nobita to confront challenges directly while emphasizing kindness and perseverance. He embraces Doraemon’s presence, valuing the robot’s support despite occasional entanglement in gadget-induced chaos.

Nobisuke’s wartime resilience and rejection of wealth for integrity later shape his teachings to Nobita. Time-travel episodes, including Nobita’s interactions with his grandmother, position Nobisuke as a bridge between eras, underscoring familial bonds and endurance across generations.