Er Xing Long  

Haze Shenron, 二星龍〈リャンシンロン〉

In the Shadow Dragon Saga, Goku and Pan first encountered Er Xing Long, who was the Two-Star Dragon representing pollution or toxicity. He appeared after Upa wished for his father Bora to return to life following Mercenary Tao's death. Despite his impressive durability, Er Xing Long is considered the weakest among the Shadow Dragons.