Doraemon, a robotic cat from the 22nd century, was specifically designed and sent back in time by a young boy named Sewashi Nobi. His mission is to assist Sewashi's ancestor, Nobita Nobi, improving Nobita's circumstances to alter the family's future away from poverty and misfortune, consequences stemming from Nobita's childhood underachievement, persistent unluckiness, and poor decisions. He appears as a round, earless, blue robot. His original robotic ears were consumed by a mouse, an event triggering his profound and persistent phobia of mice, a trait influencing his behavior. A defining feature is his fourth-dimensional pocket accessible from his abdomen, containing thousands of futuristic gadgets, tools, and medicines from his era. Frequently used examples include the "bamboo-copter" for flight, the "Anywhere Door" for instantaneous travel, and the "Time Machine" for temporal transportation. Access to some gadgets depends on his financial resources, with certain items noted as expensive even in the future. Doraemon exhibits a nurturing, protective, and often exasperated demeanor towards Nobita. He consistently offers guidance and advice to foster better decisions and personal growth. However, Nobita's tendency to seek quick solutions through gadget misuse frequently undermines these efforts, disregarding warnings and exacerbating situations into greater complications. Despite his robotic nature, Doraemon displays patience and loyalty, continuously striving to support Nobita. His relationships extend beyond Nobita to recurring figures: Shizuka Minamoto, Nobita's romantic interest; Takeshi "Gian" Goda, the neighborhood bully; and Suneo Honekawa, a wealthy, boastful classmate. Doraemon also interacts with Nobita's family and occasionally encounters his own sister, Dorami, from the future. Across all official media, Doraemon's core character and mission remain consistent. He serves as a catalyst for Nobita's adventures and moral lessons, emphasizing perseverance, responsibility, and the consequences of relying on technology over personal effort. His background as a somewhat dysfunctional robot acquired "by accident" adds relatability and humor to his guardian role.