Kokuen no Ryuu

黒煙の龍

Black Smoke Shenron is an eternal dragon of pure evil, responsible for creating the seven deadly Shadow Dragons. These Shadow Dragons originate from the overuse of the Dragon Balls and the buildup of negative energy across the series due to selfless wishes (excluding one born from an extremely selfish desire, and another whose originating wish is debatable regarding its selfish or selfless nature). They are all initially manifested within Black Smoke Shenron's body.