Black Fire, also called Hei Huo, is the second son of the Wolf King. He has a pure black back with gray‑white limbs and is known for his curiosity and mischief. It is he and his companion Hei Shan who sneak off the mountain and find the injured Xie Xiaoran, bringing him back as a “toy” for Lin Xiaoxiao. This act angers the Wolf King, but Black Fire often dodges punishment by acting silly. He is deeply fond of his sister and enjoys giving her presents. He is lively, somewhat reckless, but ultimately a loyal member of the pack.