Kuimulang appears in Chinese mythology and literature, notably in the novels Journey to the West and Fengshen Yanyi.

He is linked to a historical figure called Ma Wu, a general who hailed from the town of Huyang in Tanghe, located in the Henan province.

According to the novel Investiture of the Gods (Fengshen Yanyi), Kuimulang was originally named Li Xiong.

After he died in the Battle of the Ten Thousand Immortals, Jiang Ziya deified him as the Wood Wolf of Legs, one of the twenty-eight stars.

He lives the Moon Waves Cave (波月洞) on Bowl Mountain (碗子山) in the Kingdom of Baoxiang (寶象國).

In his past, he was a deity who falls in love with the Jade Maiden (玉女) in Heaven and decides to elope with her.

The demon is revealed to be a disguised as Revatī, the Wood Wolf of Legs (奎木狼), a star deity in the heavenly court, and one of the 28 Mansions.