Super Saiyan God (超サイヤ人ゴッド) is a Super Saiyan transformation that surpasses Super Saiyan 3. It appears in Dragon Ball Z: Battle of Gods and Dragon Ball Super, and it represents the other God in the Japanese title for the film: Dragon Ball Z: God and God (ドラゴンボールZ 神と神), as well as the reason for the plural "Gods" in the English title.
Power and Usage
The power of this form is great enough to allow Goku to fight on par with the God of Destruction Beerus, who had effortlessly defeated Super Saiyan 3 Goku, Ultimate Gohan, Majin Buu, Super Saiyan Gotenks, and a fully powered Super Saiyan 2 Vegeta. The form is clad in fiery red godly ki, which cannot be detected by anybody lesser than a god. The form even makes its user completely immune to Demigra's Dark Magic. This form also allows the user to sense godly ki. In addition, Goku as a Super Saiyan God is given a signature attack called Kamehameha Rebirth in video games.
As powerful as it is, however, it also has drawbacks: the form drains the user's energy reserves fairly quickly, thus creating a time limit, although it is speculated by Beerus that this limitation could be overcome.
Unlike the other Super Saiyan forms, Super Saiyan God is seemingly not a permanent transformation. In Goku's case, during the events of the film, he is seen losing the form, yet retaining the power, allowing him to continue to battle Beerus on equal grounds in his base and Super Saiyan forms. In the Tournament of Power Arc however, we see Goku transform into a Super Saiyan God against Dyspo, Kale, and Caulifla, seemingly solidifying the form's status as a permanent transformation.