Super Saiyan 10

Super Saiyan 10 is a Saiyan another transformation and the forbidden power of the Saiyans, that grants the user evil ki, providing them with a power boost beyond Super Saiyan 9 and its predecessors. It is initially obtained through a ritual of a forbidden power involving six Saiyans like the ritual of Super Saiyan God.

Appearance
A Super Saiyan 10's hair is shorter than a Super Saiyan 9, but is longer than a regular Super Saiyan or Super Saiyan 2. Their entire body is bulky and they are covered from head to toe in hair. Their hair is also grey.

Usage and power
Super Saiyan 10 is achieved by a ritual of Saiyans with evil energy, the one as Super Saiyan 10 gets their soul corrupted, the evil power was such that the warrior cannot bear it so it always failed. Elder Kai knew what Xicor was talking about and pleaded that Goku should not undergo the transformation of Super Saiya 10 because it's possible that the Universe would go wrong. In the Cellbuuzer Arc, Goku transformed into Silver Great Ape and the ritual had been a success within cocoon a black energy that slowly broke like the crystal and it becomes the appearance of the Super Saiyan 10. Goku also was the first person to survive the ritual while other users would be normally dead by Evil Power. Anyone who touches the user's skin would be erase from existence.