Takeshi Goda, universally known by his nickname Gian, is a prominent character in the anime Stand By Me Doraemon. His nickname is derived from the English word giant, which directly reflects his most noticeable attribute: his large, physically imposing stature. He is easily recognized by his robust build, tanned or tan complexion, and black hair. In the film, his appearance is rendered with a more realistic style, including black eyes that are not depicted as simple dots, and he wears his characteristic orange t-shirt with navy blue trousers.

Gian's personality is built upon a stark and often volatile contradiction. On the surface, he is the undisputed bully of his neighborhood, using his superior physical strength to intimidate other children. He routinely takes toys, comics, and other possessions from his peers, particularly Nobita Nobi, under the flimsy pretext of borrowing them. His aggressive behavior is fueled by an explosive temper and an apparent need to assert his dominance, going so far as to claim that he cannot eat or sleep if he goes a day without tormenting Nobita. This cruelty, however, is not without limit; he is genuinely and deathly terrified of his mother, who runs the local grocery store and does not hesitate to physically punish him for his misdeeds. Her voice alone is often enough to make him retreat in fear.

Beneath this menacing exterior lies a more complex individual capable of unexpected loyalty and protectiveness. While he is the neighborhood terror, Gian harbors a deep, fierce devotion to his younger sister, Jaiko. He is highly protective of her, reacting aggressively to any perceived insult or threat against her. He actively supports her ambition to become a manga artist, sometimes even commandeering gadgets from Doraemon to assist her, much to her occasional frustration. This duality is central to his character: he is both a tyrant and a sometimes reluctant ally, showing genuine concern and risking his own safety to help his friends, including Nobita, when they face real danger or crisis.

Gian's role in the story of Stand By Me Doraemon is deeply intertwined with Nobita's journey of self-improvement and perseverance. Early in the film, he is a primary source of Nobita's despair, contributing to the bullying that makes Nobita feel inadequate and reliant on Doraemon's gadgets. His role becomes crucial during the climax, when Doraemon prepares to return to the future. To prove he can stand on his own, a desperate Nobita challenges Gian to a fight. Gian, with his superior strength, initially overpowers Nobita with ease. However, as he witnesses Nobita's unwavering determination and refusal to surrender despite being repeatedly knocked down, Gian is moved. He acknowledges Nobita's resolve and forfeits the fight, a significant act that shows a sense of honor beneath his brutishness. In another key moment, his penchant for mischief surfaces when he tricks Nobita on April Fools' Day by falsely claiming that Doraemon has returned, a lie that ultimately leads to a chain of events ensuring Doraemon's permanent return.

His key relationships define his place in the group. His friendship with Suneo Honekawa is one of a dominant leader and a sycophantic follower. Suneo often acts as Gian's sidekick, supporting his schemes, but the dynamic is not one of equals, as Gian will not hesitate to bully Suneo as well when it suits him. With Shizuka Minamoto, Gian typically refrains from direct bullying, often stopping his aggression when she intervenes, though she still makes a point to avoid his singing concerts and cooking. The most complex and important relationship is with Nobita. While he is Nobita's primary tormentor, he is also, paradoxically, sometimes the first to support Nobita's decisions in a crisis, demonstrating a strange dependency on the very boy he bullies. This dynamic shifts between violent antagonism and genuine, if rough, camaraderie, highlighting Gian's role as a catalyst for Nobita's growth.

Gian's notable abilities are as dualistic as his personality. He is the strongest and most athletically talented child in his group, serving as the self-appointed captain of the local baseball team, The Giants. He is fiercely competitive and prioritizes winning, often blaming weaker players like Nobita for the team's frequent losses. However, his most infamous talents lie in his complete lack of self-awareness. He is hopelessly overconfident in his terrible singing voice, which is so appalling that people often faint upon hearing it. He also believes himself to be a skilled cook, though his culinary creations are equally inedible. He routinely forces the entire neighborhood to attend his horrendous concerts and to taste his disastrous cooking, misinterpreting their visible suffering as admiration. This disconnect from reality, combined with his physical power, makes him an unforgettable and formidable presence.

Despite his bombastic and aggressive nature, Gian shows moments of introspection. After realizing his friends avoid him because of his selfishness, he has questioned his unpopularity and attempted to reform his behavior, though such efforts are often undone by his own quick temper when mocked, especially by Suneo. Glimpses into the future show that he eventually matures into a responsible husband and father, suggesting that the latent goodness and loyalty he occasionally displays are the seeds of the man he will become. In Stand By Me Doraemon, Gian is not merely a one-dimensional bully but a vital force that helps define Nobita's struggles and ultimately, his strength.