Gian, formally named Takeshi Gouda, is a central figure throughout the Doraemon franchise, appearing consistently in official media like the short film *Doraemon: Nobita's the Night Before a Wedding*. His background, personality, and development remain uniform across these portrayals. Physically imposing, Gian displays an aggressive demeanor and self-centered attitude, famously captured by his catchphrase: "What's yours is mine and what's mine is mine." He routinely bullies other children, especially Nobita, seizing possessions under the pretense of "borrowing" and coercing participation in activities like his disastrous singing performances or neighborhood baseball games. His singing voice functions as a weapon, inflicting physical distress on listeners and occasionally causing structural damage, yet he remains oblivious to its flaws and relentlessly pursues musical ambitions. Counterbalancing his bullying, Gian exhibits fierce loyalty and protectiveness. He is deeply devoted to his younger sister, Jaiko, actively supporting her comic-writing efforts, sometimes misusing Doraemon's gadgets in misguided attempts to help. His mother stands as the sole figure he fears, physically punishing him for neglecting responsibilities or bullying others, adding a layer of complexity to his character. Gian's friendships with Nobita, Suneo, and Shizuka reveal multifaceted traits. While he frequently intimidates Nobita and Suneo, he demonstrates genuine concern during crises, rescuing Nobita from danger or aiding him during illness. Group activities, like Nobita's bachelor party in *Nobita's the Night Before a Wedding*, showcase his camaraderie, as he organizes celebrations and engages in lighthearted events, highlighting his capacity for teamwork and occasional vulnerability. His dynamic with Suneo fluctuates between alliance and conflict, with Suneo often acting as his sidekick yet sometimes rebelling. His role in *Nobita's the Night Before a Wedding* exemplifies this development. Gian assists adult Nobita and Shizuka in returning a lost cat to its owner, providing transportation to the airport alongside Suneo. This film-specific subplot underscores his willingness to help friends despite chaotic situations. His participation in pre-wedding events further confirms his entrenched position within the core friend group. Across the franchise, Gian's arc includes moments of introspection, questioning his unpopularity or attempting self-improvement after encounters with Doraemon. Though these efforts often falter due to his temper, they signal underlying insecurity and a desire for acceptance. His significant physical strength and athleticism, notably as captain of the neighborhood baseball team, contrast sharply with his academic struggles and emotional outbursts. These inherent inconsistencies—aggression paired with loyalty, bullying offset by protectiveness—define Gian as a character whose actions frequently stem from a flawed but earnest understanding of friendship and responsibility.