Vegeta is the Prince of an extraterrestrial race of warriors known as the Saiyans just like the series' protagonist, Goku. Vegeta is extremely vain and proud, constantly referring to his heritage throughout the series. He believes he should be regarded as the strongest fighter in the Universe and becomes obsessed with surpassing Goku after fighting him. After his loss to Goku and the Z fighters, Vegeta later reluctantly unites with the heroes to thwart greater threats to the universe. Throughout the series, Vegeta's role changes from villain to antihero and later as one of the heroes, while remaining a rival to Goku. Vegeta's character, particularly his personality, has been well received. He is one of the Dragon Ball franchise's most popular characters.