Goofs

When Bulma asked Mai's age, she answers 41. If Mai is 41 years old, it means she was only 12 years old at the beginning of the Dragon Ball series, the same age as Gokû, one year younger than Krillin and 4 years younger than Bulma, despite looking older and acting more mature than all the mentioned characters.

Beerus claims that on Earth, he made the dinosaurs go extinct. The dinosaurs are NOT extinct on Earth in the Dragon Ball universe.

Emperor Pilaf and company steal the four star Dragon Ball, prompting the Z-Fighters and their friends to exclaim "The four star ball's missing!" But most of them were not sitting close enough to the stage to see what ball was missing. Furthermore, it seems highly unlikely they all would have said the exact same thing at the exact same time like this.