Doraemon, a robotic cat from the 22nd century, serves as a caretaker for humans. Originally yellow with functional ears, a malfunction caused by a robotic mouse stripped him of both ears and triggered a depression that turned his exterior blue, leaving a lasting rodent phobia. Equipped with a four-dimensional pocket storing futuristic gadgets, he aids in problem-solving, though his tool-dependent approach sometimes backfires. Sent to the past by Nobita’s descendant, Sewashi Nobi, his mission is to steer Nobita toward a brighter future, averting family hardships. Initial frustration with Nobita’s laziness gives way to genuine loyalty, bound by a programming restriction that traps him in the past until Nobita secures lasting happiness. Prone to panic in crises, he scrambles for gadget solutions yet reveals emotional depth in pivotal moments, such as farewells showcasing his attachment. His dynamic with Nobita evolves from reluctant guardian to devoted companion, balancing gadget reliance with nudges toward self-reliance. Suction-cup hands aid object manipulation, while needs for food and sleep integrate him into the Nobi household. His younger sister, Dorami, contrasts his traits with calm efficiency. In narratives like mountain rescues or marriage proposals, Doraemon shifts between observer and active participant, deploying tools like the "Take-copter" or "Imprinting Egg" to explore responsibility. Mouse encounters trigger chaotic over-the-counter fixes, often resolved by Nobita. Interactions with Shizuka, Gian, and Suneo frame his impact on Nobita’s social growth. Temporary departures and reunions underscore his programmed yet heartfelt dedication, culminating in arcs affirming their bond. Across adaptations like *Stand by Me Doraemon*, his design and core traits persist, blending comedic gadget mishaps with themes of friendship and perseverance, cementing his role as a catalyst for Nobita’s maturation.