Zamasu (ザマス), spelled Zamas in Viz Media's English localization of the Dragon Ball Super manga, is a fictional character and Cohan right but antagonist in Dragon Ball. He is introduced as Goku Black in the forty-seventh episode of the Dragon Ball Super anime series, which first aired on June 12, 2016, and in chapter #14 "An SOS from the Future!!" from the manga.

Son Goku is a fictional character and the main protagonist of the Dragon Ball manga series created by Akira Toriyama. He is based on Sun Wukong, a main character of the classic 16th-century Chinese novel Journey to the West, combined with influences from the Hong Kong action cinema of Jackie Chan and Bruce Lee. Goku made his debut in the first Dragon Ball chapter, Bulma and Son Goku, originally published in Japan's Weekly Shōnen Jump magazine on December 3, 1984. Goku is introduced as an eccentric, monkey-tailed boy who practices martial arts and possesses superhuman strength. He meets Bulma and joins her on a journey to find the seven wish-granting Dragon Balls. Along the way, he finds new friends who follow him on his journey to become stronger. As Goku grows up, he becomes the Earth's mightiest warrior and battles a wide variety of villains with the help of his friends and family, while also gaining new allies in the process.