Saken is the creator of the Negative Dragon Balls. He tried using the Dragon Balls to make an unspeakable wish and Shenron couldn't grant it. Saken then wished for Negative Dragon Balls and Shenron granted it. Saken then took them for himself and created a Negative Shenron. This Shenron could grant any wish in the universe. Saken was going to make his wish but he was killed. The Negative Dragon Balls are scatered across the world.