A former delinquent school girl, she became friends with Arale and somewhat reformed. She still has a strong dislike for anything school-related. Although you cannot really tell in Dragon Ball, she is dating Tsukutsun at this point.
Akane's older sister, she runs Penguin Village's local coffee joint. She is great at brewing coffee, but an unbelievably awful driver. Because of this she gets into an accident every time she drives, and people hate to ride with her.
The star of Akira Toriyama's first big hit, Dr. Slump, she is an absurdly powerful and rather demented robot girl created by Senbe. She loves monsters, poop, and wrestling above all else. When Goku comes to Penguin Village, she helps him out by sending General Blue flying.
A resident of Penguin Village, he is a pig whose job is to announce the time. He is the first Dr. Slump character to appear in Dragon Ball as he announces that, "It's afternoon in Penguin Village".
Arale and co.'s big-headed school teacher, he has somewhat harsh views on student discipline, and head-butts his students when they act up. He appears very briefly in Dragon Ball, just long enough to give the V-sign in the background.
An angel sent by God (as depicted in Dr. Slump) to Earth in prehistoric times in order to keep the planet's technological progress in check. Arale and co. find his egg while time traveling and taking it into the present, thwarting this divine plan. Once hatched, he becomes one of Arale's best friends, and eventually splits into two. He is almost always called "Gatchan", a combination of his name and the honorific chan.
An annoying little girl from Penguin Village, she makes a big fuss about being much more hip and fashionable than anyone else in town. She appears in Dragon Ball to complain about what rubes everyone is, then moves on her merry way.
An alien invader that got stuck on Earth due to Arale, and spends the better part of Dr. Slump trying to return to his home planet. He is basically the Pilaf of outer space. He eventually does manage to return home, making his brief appearance in Dragon Ball somewhat of an anomaly.
Arale's former teacher, she married Senbe after he accidentally proposed to her (she was on the toilet at the time). She has a son named Turbo, and now teaches kindergarten. Like many of the Dr. Slump characters, she does little in Dragon Ball besides show up.
A robot created by Senbe's rival, the evil Dr. Mashirito, based on Arale's design. He has all of her powers, but is her opposite in most other ways, being extremely prim and proper. Originally created to destroy Senbe and co., he instead befriends them and falls in love with Arale. He has several pet cats, which he mentions during his brief appearance in Dragon Ball.
The titular doctor from Akira Toriyama's first big hit, Dr. Slump ("slump" referring to his streak of lousy inventions). A self-described genius inventor, he devotes his brilliant mind largely toward coming up with new ways to peep at women. He is married to Midori, Arale's former teacher, and has an infant son named Turbo. In Dragon Ball, he does little beyond noting that it's the first time in years that he's appeared in Weekly Shōnen Jump.
Senbe and Midori's son. He was once an ordinary baby, but was accidentally struck dead by a UFO. The aliens managed to revive him, but their strange technology ended up giving him super-genius level intellect as a result. While still just a baby, he can talk and use psychic powers, and is already a better inventor than Senbe. He creates a new Dragon Radar for Goku instantly out of plane parts.
The titular doctor from Akira Toriyama's first big hit, Dr. Slump ("slump" referring to his streak of lousy inventions). A self-described genius inventor, he devotes his brilliant mind largely toward coming up with new ways to peep at women. He is married to Midori, Arale's former teacher, and has an infant son named Turbo. In Dragon Ball, he does little beyond noting that it's the first time in years that he's appeared in Weekly Shōnen Jump.