Nobita is one of the main characters of the Doraemon series. A fourth grader in Tokyo and only child, he is the quintessential flawed protagonist. He is lazy, bad in sports, bad in school, plain as a gray rock, and to top it off, all too unlucky in his (mis)adventures with Doraemon. However, his struggles to overcome his flaws are what drive the storyline.
Doraemon is a robotic cat (though he is frequently mistaken as a tanuki) that was sent back in time to help Nobita. He has a 4-dimensional pocket on his front chest from which he can pull out all sorts of strange futuristic devices. Doraemon's favorite food is dorayaki. He has a sister name Dorami.
Shizuka, usually called Shizu-chan (��ゃん) or Shizuka-chan (�香�ゃん), is the smart, kind, and pretty neighborhood girl who is the object of Nobita's affections. She takes baths several times a day. Nobita often disrupts her in the bath due to some misuse of Doraemon's gadgets, resulting in Nobita's head getting dunked. She is also known for taking piano lessons unwillingly, which is sometimes used as an excuse for declining to hang out with Nobita. Her true passions are sweet potatoes, which she'd rather keep to herself out of the knowledge of others, and the violin, in which her playing is as atrocious as Gian's singing. Due to Doraemon's intervention, Shizuka will become Nobita's wife in the future timeline, and the mother of his son. (Source: Wikipedia)
Suneo is the fox-faced (inherited from his mother) rich kid who loves to flaunt his material wealth before everyone. He is often seen with Gian, serving as Gian's lackey while they bully Nobita together, though deep down he fears and despises him as much as everyone else. Some of the stories start with Suneo showing off some new video game or toy which evokes Nobita's envy. He has an extensive knowledge of science, and is a talented artist and designer. He has the habit to invite Gian and Shizuka to something or someplace, but always leave Nobita out with one excuse or another. In some scenes, Suneo is seen as a narcissist who loves to stare at himself in the mirror while telling himself that he is the most handsome guy in the world. He is still a bed-wetter and needs to wear diapers when he sleeps, despite being in the fourth grade. He considers this humiliating habit his secret weakness. Suneo is also very self-conscious about his height, being the shortest kid in his class. (Source: Wikipedia)