Goku Black's transformation turned Super Saiyan Rosé instead of Super Saiyan Blue because he was a fully divine being.
The Divine Nature of Super Saiyan Rosé
Unlike Goku and Vegeta, who are Saiyans that achieved divine ki, Goku Black was actually Zamasu, a Kaioshin (a divine being) inhabiting Goku's body. This fundamental difference in his intrinsic nature dictated the color of his Super Saiyan God Super Saiyan equivalent.
When Zamasu, in Goku's body, continued to fight and grow stronger, the divine soul within him merged more deeply with the Saiyan cells. This unique fusion allowed him to push beyond the Super Saiyan God state. Because Black was inherently a divine entity, his version of the Super Saiyan God transformation manifested with a distinct pink aura and hair color, reflecting his divine ki in a way that differs from a mortal's divine transformation.
This distinction is crucial:
| Feature | Super Saiyan Blue (SSB) | Super Saiyan Rosé (SSR) |
|---|---|---|
| User's Nature | Mortal Saiyans who have absorbed God Ki (e.g., Goku, Vegeta) | A fully divine being (e.g., Zamasu) in a Saiyan body |
| Ki Type | Mortal wielding divine ki | Pure divine ki from an actual deity |
| Appearance | Blue hair and aura | Pink/Rose hair and aura |
| Origin of Power | Achieved by pushing beyond Super Saiyan God with mortal effort and divine training | Achieved by a divine being pushing beyond Super Saiyan God through the fusion of divine soul and Saiyan body |
Essentially, while Super Saiyan Blue is the form for mortals who have mastered divine energy, Super Saiyan Rosé is the equivalent for a literal deity who has tapped into Saiyan power. The Rosé color symbolizes this unique divine connection, marking it as a twisted mirror image of the mortals' divine transformation.
