Dragon Ball: The Magic Begins (1991)

The evil alien King Horn has attacked the planet Earth in search of the seven magic Dragon Pearls in order to to conquer mankind and rule the universe. He begins his plan by acquiring two of the Pearls, along with kidnapping Sparkle, a guardian of one of the Pearls. Sparkle's grandson, the Monkey Boy, now sets out on a quest to stop the King, picking up a ragtag band of comrades: the tech-savvy Y-Tou, a fat shape-shifter named Piggy, the rogue bandit Westfoot, and the aged but perverted Turtle Hermit. This gang is the only hope against the King... if they don't steal the Pearls for themselves.