66Jiora is a policeman from the planet Biretijon. One day, his ship crashes on Earth while he was pursuing dangerous criminals in space. He repairs his ship but, short of fuel, he has to take the appearance of the man he accidentally killed when he arrived on Earth, Chapat, a lazy and coward policeman from Slope Town. To raise the sum of 17 million yen needed to buy fuel for his ship, which is gold, Jiora fights crime for money as Cashman, resuming his extraterrestrial appearance. (Source: Dragon Ball Wiki)
Mr. Ho is a one-shot manga, drawn by Akira Toriyama, featuring a Yamucha-like character as the protagonist. It's story is similar to Dragon Ball`s Red Ribbon Army Saga. Mr. Ho is seen wielding a bazooka, much like Yamcha in the beginning of Dragon Ball, and defeats the entire army in the same manner Goku defeated Red Ribbon Army. This one-shot also features Bulma-like character.
In year 9 of the Hanpeï era, Karamaru-kun, a four-year-old ninja, has to bring mushrooms in town and sell them to buy medicins and cigarettes for his sick grandfather. On the way, he meets a car stealer who thinks he is ninja as well. The car stealer helps Karamaru to stop a gang of three ninja thieves who took his mushrooms (they do not steal the car because none of them has a driving license). In the end, convinced that he must be a good example to the young boy, the car stealer brings the car to the police and offers Karamaru to become his disciple. (Source: Dragon Ball Wiki)
Tetsunoshin Kataiwa is a cool old man who is the mayor of Pon Pon village, a small village in the countryside by the sea. He protects his village using his Suzuki Jimny, a vehicle he nicknamed "Pochi". One day, he tracks a man because he passed through the village and threw a juice can out his car. Unknown to Tetsunoshin, the man is actually a dangerous gangster who will try to destroy the largest power plant in the country with the help of his accomplice, in an attempt destroy the whole land. Thanks to his car which has the ability to fly and fire rockets, the mayor stops the criminal and saves the land. (Source: Dragon Ball Wiki)
Pola hires space taxi driver Roid and the two end up fighting the evil emperor Gaganbo.
Kennosuke is a 5–6 years-old samurai very well mannered and very serious. He has a date with a girl named Miss Oden. Not knowing the good practice in a date, Kennosuke seeks advice from his mother and his best friend Shinobimaru, with discretion, so that no one realizes it is his first time. After a visit to the seaside and time passed in a small cafe, Kennosuke gets the opportunity to demonstrate his ability in combat when a gang tries to steal his money. (Source: Dragon Ball Wiki)
The story covers the time period up to Goku being sent to Earth, and marks the first appearance of Goku's mother Gine in the Dragon Ball franchise. This is a special manga featured in the collected volume of [Jaco the Galactic Patrolman](https://mangabaka.org/search?q=anilist%3A84627) (Source: Wikia)
The story is set in Pepper Town, where two guys named Dub and Peter go to a junkyard to create a really fast car to pick up girls. When completed by Peter, the car was named "Peter 1" with Dub as its driver. The car is controlled by a computer and has its own personality and can talk to Dub. (Source: Dragon Ball Wiki)
Escape is a five-page science fiction manga by Akira Toriyama. It was first published in a special edition of Weekly Shōnen Jump in full color. Escape tells the very short long odyssey of a girl with purple hair who must not be seen under any circumstances. In the manner of twist endings, this story follows the same standards as the 1950s U.S. Science Fiction comics. (Source: Dragon Ball Wikia)
An incompetent, 18-year-old rookie policewoman named Tomato Akai apprehends the criminal Kenta Kuraaku. Published in the August 15, 1979 special issue of Weekly Shōnen Jump.
The story is that of a greedy junior high school student, Kanta, who can not eat because of a toothache. He sees a dentist, the incompetent Dr. Goat, who uses Kanta in funny experiments that make him suffer from his toothache more than before. (Source: Dragon Ball Wiki)