Zinkoku-jin

The Zinkoku are a derivative race of Saiyan that split off from the Saiyan racial line several millenia ago, when they split over which planet to colonize.

When the Saiyans divided over the takeover of Planet Plant, almost every Saiyans with ascending capabilities sided with the Departed, which would later account for the majority of the race being able to go Super Zinkoku - a form identical to Super Saiyan, except with silver hair and much higher energy capabilities.

History
The Zinkoku were comprised of some of the most forward thinking, intelligent Saiyans of its time. Rather than destroying the Tuffle planet that was right under Emperor Frieza's nose, the divergent Saiyans chose to use their technology to access the opposite end of the universe, so that they wouldn't be under the direct scrutiny of Frieza and the class-system Saiyans. They conquered a temporary planet in the meantime (with a soft red atmosphere) that would serve as their temporary home planet until they discovered how to access the other side of the universe.

their technology to access an area of dark space, which had reportedly not been thoroughly explored and was said to be filled with unmined ores. After a few test explorations, they stabilized their dimension traveling and came upon a planet that was made almost completely of an unknown metal.