Nobita Nobi hails from Tokyo, Japan, residing with his parents, Nobisuke Nobi and Tamako Nobi. His future sees him marry Shizuka Minamoto, resulting in a son named Nobisuke Nobi Jr., and a great-great-grandson, Sewashi Nobi. This lineage directly connects to Doraemon, a robotic cat dispatched from the future to alter Nobita's destiny.
Academically, Nobita struggles profoundly, consistently scoring zero on exams. This triggers frequent teacher punishments like detention or standing outside class. His difficulties stem from procrastination, an aversion to studying, and a dislike for books, creating a cycle of underperformance, maternal disappointment, and attempts to conceal test results. His athletic abilities are equally limited; he performs poorly in baseball and other sports, possesses low endurance, tires quickly during physical activities, and often frustrates peers.
Personality-wise, Nobita exhibits laziness, frequently napping after school and disrupting his sleep schedule. He displays dependence, often pleading with Doraemon for gadgets to solve problems or exact revenge. Despite these flaws, he demonstrates kindness towards animals and people in need, showing generosity. His significant strength lies in creativity, enabling him to devise unconventional uses for Doraemon's devices – inventing new sports with wind-generating fans or repurposing seemingly useless gadgets for transportation. This creativity occasionally extends to writing narratives or comics, though hampered by spelling errors or artistic limitations. Nobita also possesses exceptional marksmanship skills and proficiency in string figure weaving.
Specific stories explore his background, such as an episode where Nobita questions his origins, suspecting adoption. This leads him and Doraemon to journey back to his birth day. There, he witnesses his parents' actions and emotions, observing young Nobisuke Nobi venture out in the rain to fetch his wife's favorite peaches shortly after Nobita's birth, demonstrating parental dedication. This experience provides clarity and alleviates his doubts.
Relationships are central to his character. Nobita shares a deep bond with Doraemon, relying on him for support yet recognizing him during impersonations. His childhood crush on Shizuka Minamoto evolves into marriage. He often uses gadgets to impress her, though his efforts are frequently unintentionally overshadowed by Hidetoshi Dekisugi. Despite occasional conflicts like accidental invasions of privacy or insensitive remarks, their relationship endures. Interactions with Takeshi "Gian" Gouda and Suneo Honekawa involve frequent bullying, jealousy, and manipulation, yet feature moments of mutual support and cooperation against external threats or shared frustrations with Gian's behavior.
Nobita's original future trajectory involved financial failure and marriage to Gian's sister. Doraemon's intervention shifts this path, leading to an improved life with Shizuka. This change impacts his descendants, who initially live in 22nd-century poverty before Sewashi sends Doraemon back to aid Nobita.
Nobita has faced criticism in some regions for traits perceived as negative influences, including answering back to parents and avoiding homework, focusing on his laziness and occasional amorality.