Gu Zi (谷子, Gǔzi) is the son of the man whose body is possessed by Qi Rong He is an obedient and caring child who nags Qi Rong for eating humans. Though being yelled at repeatedly, he still follows his father, who is being possessed by Qi Rong, around. Nothing is known about his past, except that his biological father was extremely abusive towards him.

He first shows up when Hua Cheng and Xie Lian are in the Cannibal Lair of Qi Rong. Gu Zi gets picked out to be eaten by one of Qi Rong's underlings, causing his father to flee out of After Qi Rong has possessed the body of his birth father later on, Gu Zi stays at his side. He takes care of him when Qi Rong is tied up at Puqi Shrine and tries to stop him from doing immoral things.

In the end Qi Rong sacrifices himself to save Gu Zi when the Heavenly Realm was destroyed by Jun Wu. He's currently taken care of by Lang Qianqiu, waiting for his father's return