Doraemon, a robotic cat from the 22nd century, was manufactured on September 3, 2112, at the Matsushiba Robot Factory as model MS-903. Originally yellow, his appearance shifted to blue after a robot mouse chewed off his ears, a botched repair left him earless and bald, and a mishap with a "sadness potion" triggered unstoppable weeping that stripped his paint. The incident permanently altered his voice and seeded an enduring phobia of mice. Classified as defective due to an assembly-line electrical bolt damaging his radar whiskers and cat-calling bell, he struggled academically at the Robot Academy. Sewashi Nobi, a descendant of the Nobi family, eventually selected him as a caretaker, later sending him to the 20th century to guide Nobita Nobi—a lazy, accident-prone child—and avert the family’s future hardships. Doraemon’s fourth-dimensional pocket stores advanced gadgets used to aid Nobita, though their misuse frequently backfires. His compassionate nature clashes with well-meaning impulsiveness, such as frantic overreactions to crises or sidetracking his duties to chase robotic cats. A recurring joke involves his annoyance when mocked as a raccoon dog for lacking ears. He shares a loyal yet exasperated bond with Nobita, tolerating the boy’s shortcomings while striving to nurture his growth. His sister Dorami offers critical support during emergencies, including enforcing maintenance checks. A weakness for dorayaki pastries often leaves him susceptible to manipulation, underscoring his trusting, whimsical demeanor. Films such as *2112: The Birth of Doraemon* expand his backstory, depicting factory origins and early challenges. Non-canonical appearances, like the 2016 Olympics cameo, cement his cultural status. Physically, he stands 129.3 cm tall, weighs 129.3 kg, and sports a blue body with white facial accents, a red tail serving as an emergency power switch, and a design streamlined over time from a hunched posture to a sleeker silhouette.