Hakuryu

Hakuryu is Cho Hakkai's pet, and turns into the green jeep that the group uses for transportation. He enjoys perching on Hakkai's shoulder, and he looks after his master with obvious affection. Hakuryu fights by blinding the enemy with his wings while trying to scratch their eyes out. His fire breath has also occasionally been used to help support Hakkai's chi barrier.

In some translations of Xi Yoú Ji, Hakuryu’s nameless counterpart was Zhū Bājiè’s equally ugly and stupid brother who the Goddess punished by turning into a powerful white steed for Xuanzang to ride. This is probably why Hakuryu belongs to Hakkai in Saiyuki, and the reason he still acts as a means of transportation. In the most common translation, a great and powerful dragon king volunteered to become Xuanzang’s horse, which is why Hakuryu is portrayed as a dragon.