Takeshi Gouda, known as Gian, is a central figure across the *Doraemon* franchise, including the film *Doraemon: Boku no Umareta Hi*. His imposing stature features a large build, black hair, and tan skin. Gian exhibits an aggressive, selfish, and short-tempered nature, frequently bullying neighborhood children like Nobita Nobi under the guise of "borrowing" their possessions, declaring "What's yours is mine and what's mine is mine." He displays immense overconfidence in his singing and cooking, abilities so notoriously detrimental that his singing causes listeners physical distress and can crack structures, while his cooking proves similarly hazardous. Oblivious to these flaws, he forces others to endure his performances. He fears only his mother, who runs a local grocery store and physically punishes his misbehavior. Gian shows intense protectiveness towards his younger sister Jaiko, sometimes annoyingly so, and supports her comic-writing ambitions, occasionally employing Doraemon's gadgets to aid her. Gian's relationships are marked by complexity. With Nobita, he alternates between relentless torment—justified by statements like "If I don't bully Nobita a day, I can't eat and sleep"—and fierce loyalty, rescuing him in perilous situations like *Nobita's South Sea Adventure* and *The Day I Was Born*. Suneo Honekawa acts as his frequent sidekick, though their uneven friendship involves Gian beating Suneo and Suneo occasionally betraying him. Gian respects Shizuka Minamoto, halting aggression when she intervenes despite her dislike of his behavior. Doraemon aids him occasionally but typically reacts with fear or disapproval. As captain of the neighborhood baseball team, the Giants, Gian's frustration and abusive outbursts often erupt due to the team's poor performance stemming from weak members like Nobita and Suneo. He possesses superhuman strength, durability, and stamina, capable of inflicting harm robust enough to damage structures or characters like Doraemon. Across the franchise, Gian experiences fleeting moments of self-awareness, such as reflecting on his unpopularity during his birthday leading to temporary remorse and a pledge to improve, though he quickly reverts after provocation. Films and specials more consistently highlight his protective instincts and willingness to aid friends during genuine crises, contrasting his usual antagonism. In *The Day I Was Born*, he reinforces this capacity for loyalty by rescuing Nobita from a life-threatening fall.