Black Smoke Shen Long
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Black Smoke Shen Long (阿久 神龍, Aku Shinryū; FUNimation "Black Smoke Shenron"; Literally meaning "Evil God Dragon") is an Eternal Dragon.
Black Smoke Shen Long was responsible for the creation of the seven deadly Evil Dragons. The Evil Dragons were born from the overuse of the Dragon Balls and the accumulation of Negative Energy throughout the series for selfless wishes, with the possible exception of one born from an extremely selfish desire and one born from a wish that is debatable in terms of whether it was selfish or selfless in nature), are all initially manifested within Black Smoke Shen Long.
When Son Goku and friends attempted to use the Dragon Balls to restore the lives of the people killed during Super 17's crusade, it was Black Smoke Shen Long who emerged from the artifacts. Before long, the mysterious deity split into seven individual Evil Dragons. Elder Kai observes that every time the Dragon Balls have been used in the past, the negative energy housed within each individual ball would increase. When this energy completely filled the Dragon Balls, they cracked, allowing Black Smoke Shen Long to escape and release his seven personae. Black Smoke Shen Long's personality also reflects the negative energy that was used to create him, whereas Shen Long was well mannered and spoke appropriately, Black Smoke Shen Long is foul mouthed and impolite to those who summoned him, as shown when Pan tried to tell him how to act like an Eternal Dragon, he also smokes cigars and blows his smoke at those who summoned him to show he has no interest in granting wishes.
He is named Kokuen no Ryū (黒煙 の 龍, Kokuen no Ryū) in Miracle Battle Carddass: Dragon Ball Kai.
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- Black Smoke Shen Long is technically the only Eternal Dragon who can be summoned from the same Dragon Balls as another one, although his summoning was due to the overload of negative energy inside the Dragon Balls that previously summoned Shenron. Also, if he is counted as an Eternal Dragon, he is the only one with wings.