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4. Dr. Slump

Dr. Slump is filled with puns, sexual references, and bathroom jokes, and parodies of both Japanese and American culture. For example, one of the recurring characters is "Suppaman", a short, fat, pompous buffoon who transforms into a Superman-like costume by eating a sour-tasting umeboshi. Unlike Superman, Suppaman can't fly, and instead pretends to fly by lying belly down on a skateboard and scooting through the streets. Also, a policeman in Dr. Slump can be seen wearing a Star Wars-style storm trooper helmet, just as in the American movies. The Dr. Slump manga has been licensed by Viz Media and is currently being published in graphic novel form, with having most of the sexual references and humor, nudity, and as well as alcohol usage and references edited out or censored. Dr. Slump and the anime based on it have been run in almost everywhere else in the West; for example, France, Germany, Italy, Mexico and Spain.

Dr. Slump is set in Penguin Village , a place where humans co-exist with all sorts of anthropormorphic animals and other objects. In this village lives Senbei Norimaki , an inventor . His nickname is "Dr. Slump" In the first issue, he builds a little robot girl he names Arale Norimaki , in scenes obviously parodying the Italian children's classic Pinocchio . Because Senbei is a lousy inventor, she soon turns out to be in severe need of eyeglasses. She is also very naïve, and in later issues she has adventures such as bringing a huge bear home, having mistaken it for a pet. To Senbei's credit, she does have super-strength. In general, the manga focuses on Arale's misunderstandings of humanity and Senbei's inventions, rivalries, and romantic misadventures.

Wikipedia

Dr. Slump is finished and has 18 Volumes and 236 Chapters. It is also Known as: Dr. スランプ, Dr. Slump and Arale-Chan

3. Sakigake!! Cromartie Koukou

Welcome to Cromartie High—a melting pot of underachievers and overzealous bullies, where the fist rules and the student body has the combined I.Q. of a rusty nail. After a whole lot of bad judgment and a little bad luck, Takashi Kamiyama is now attending this academy of dunces. Here, his only homework will be defending himself against the foul-mouthed robots, semi-intelligent apes and masked villains that roam the halls of Cromartie High School!

Cromartie High School is finished and has 17 Volumes and 335 Chapters. It is also Known as: 魁!! クロマティ高校, Sakigake!! Cromartie Koukou

2. Gintama

The samurai didn't stand a chance. First, the aliens invaded Japan. Next, they took all the jobs. And then they confiscated everyone's swords. So what does a hotheaded former samurai like Sakata "Gin" Gintoki do to make ends meet? Take any odd job that comes his way, even if it means losing his dignity.

Included one-shots:

Volume 1: Dandelion

Volume 2: Shirokuro

Volume 24: 13

Volume 38: Bankara-san ga Tooru

Volume 41: Special Lesson.

Gin Tama is finished and has 77 Volumes and 709 Chapters. It is also Known as: 銀魂, Dandelion, Shiro Kuro, Black and White, Shirokuro, 13, Thirteen, Bankara-san ga Tooru, Here Comes Mr. Uncivilised, Silver Soul

1. Doraemon

Doraemon, a cat shaped robot which came from the 22nd century in the future, goes back in time in order to help Nobita, a below average lazy kid, to make his life less miserable and improve his descendent's life. With many of Doreamon's gadgets from the future, Nobita's life will never be as the same.

Doraemon is finished and has 45 Volumes and 821 Chapters. It is also Known as: ドラえもん, Doraemon