He appeared twice in the first season, in which he tried to offer Jake, who he seems to have an interest in, a chance to join him during their first meeting. In "Hong Kong Nights", the Dark Dragon is defeated by Jake and his friends and seems to be destroyed, but through the use of a spell, he is brought back to power and returns at the end of "Being Human". In the series finale "The Hong Kong Longs", it is revealed that Chang not only resurrected him but she imbued him with many dark powers. He captured Lao Shi, in order to blackmail Jake into betraying the dragons of the world .After the battle that had taken hold, Chang and Bananas B are defeated along with the Shade Demons who are destroyed by Johnathan Long. However, the Dark Dragon has yet to be matched until Rose returns to help Jake and fights him. The temple they are in starts to begin its disappearance for another, according to Fu, 1,000 years. Everyone leaves but Rose is still trapped within. Jake immediately goes to rescue Rose but starts to be pulled into the portal with the Dark Dragon until Rose cuts off the tip of his tail giving her and Jake the chance to escape. The Dark Dragon is then pulled into another dimension where he will be imprisoned for another 1,000 years. The Dark Dragon dies when he gets crushed by the rocks in the portal or killed by strange magical creatures in to another dimension.
Role in the seriesThe Dark Dragon serves as the dragon commander to Emperor Fang, and resents working under the emperor. He is one of the only villains in the empire who knows that the real emperor is actually Makuta, and wants to find a way to become the new emperor and destroy Makuta so that Fang can serve HIM instead of the other way around. This scheme is currently being planned to be made by Scroopfan in his series, but Dark Dragon now has Experiment 621 and Riku on his side to take over. All that's mssing is clips of Dark Dragon to be contained. In a recently played roleplay that has not happened yet in the series based on Spyro and Friends VS Sly Cooper, apparently Emperor Fang has been captured by the Shell Louge Squad, and now the Dark Dragon leads the Fang Empire, or as he prefers to call it now: The Dark Dragon Scourge Empire.
In Spirited Away, the Dark Dragon is revealed to be the father of Kohaku and appears at the end to try and sway him over to his side, a la Darth Vader and Luke Skywalker.