During his time serving the sorcerer, Captain Chen was tasked with guarding his treasure. But soon Chen's greed played on him and he stole some of the treasure for himself. The sorcerer soon became aware of Chen's actions and punished him by turning him into a golden dragon. Chen soon returned the treasure but it didn't make a difference in what was done. However, the sorcerer showed some form of mercy by giving Chen a magical Dragon Tooth Necklace preventing him from changing into the golden dragon as long as he wears it.
Role in the series
In the episode "The Golden Dragon" as the dragon chases Jake into a cave it soon disappears and Chen reappears lying on a rock, Captain Jake swung over to see if he was okay and when Chen woke up he greeted Jake he was feeling tired, Jake figured he needed to rest, Chen agreed that's what he needed. Once back aboard Bucky, Jake and his crew began to realize that Chen and the golden dragon are one and the same. Chen told his new friends of how he was cursed for his past mistakes trying to steal the Sorcerer’s Treasures and the necklace is the only thing that can prevent the dragon from attacking. Jake and his crew try another attempt to reclaim the necklace from Hook when Chen loses control once more. But during the chaos Hook finally gives up on the treasure believing no treasure is worth dealing with fire breathing terror allowing Jake to return the necklace to Chen turning him back into a pirate. Chen was grateful to Jake and his crew help and promises to return the favor one day.
In the episode "The Forbidden City", Chen comes to asks Captain Jake to help him find the Forbidden City which has a cure for his dragon curse. While journeying through the Forbidden City, Chen and Jake had to face various trials in order to find a means to return himself to normal. But Captain Hook touches the enchanted sorcerer's treasure turning himself into a dragon. But with the assistance of Chen and Jake manage to capture Hook. In order to spare Never Land from Hook's fiery wrath, Chen gives up his only means to break the dragon curse and gives it to Hook.