In the show, the evil, often comically fat monster Majin Bû was created by a sorcerer named Bibidi and brought out of hibernation by the actions of Bibidi's son, the sorcerer Babidi. This is an homage to La Cenicienta (1950) in which Cinderella's fairy godmother turns a pumpkin into a coach with the magical spell "Bibbity Bobbity Boo!" (Bibidi-Babidi-Bû)
There were 187 fights from Dragon Ball to the end of Dragon Ball Z
Bulma changes her hairstyle, 16 times from DB to the end of DBZ.
To keep pace with the release of the original manga, Toei Animation had to create several "filler" sagas that didn't exist in the original manga. These include the fake planet Namek, the Garlic Jr. Saga, and the afterlife tournament.
At the beginning of Dragon Ball Z, Piccolo is eight years old (Namekusei-jins mature considerably faster than humans.)