Super Saiyan God (超サイヤ人ゴッド, Sūpā Saiya-jin Goddo) is a transformation of a Saiyan with the power of a god. Super Saiyan God surpasses that of a Super Saiyan 3.
Super Saiyan God is a legend of the Saiyan race. Shenlong explains that on Planet Vegeta that a group of six Saiyans fought against evil Saiyans. In a critical situation, five of the Saiyans pooled their power into the ither Saiyan and he became a Super Saiyan God. However, the power the Saiyans gave him could not help him for long, as the power vanished and the Saiyan vanished too. Since then, Super Saiyan God became a legend. Years later, Goku became a Super Saiyan God to be a challenger to the God of Destruction Beerus.