Zhu Zizhen is one of the Seven Monsters of Mount Mei in Investiture of the Gods. He is a boar spirit who comes to Yuan Hong’s camp in the appearance of a wandering practitioner and fights on foot with a sword.
Dark-Faced Human Form
The novel gives Zhu Zizhen a dark face, long lips, large ears, heavy brows, and a cold presence before he reveals the boar body hidden beneath his practitioner guise.
Boar Transformation
Zhu Zizhen releases black smoke, reveals a great boar body, and swallows opponents. Erlang Shen answers by entering the boar’s belly and attacking from within.
Erlang Shen Inside the Monster
After Zhu Zizhen swallows Erlang Shen, Erlang Shen attacks him from within and forces him to return to boar form and submit. The episode turns Zhu Zizhen’s greatest physical advantage into the cause of his defeat.

