Name: Wei Ying
Courtesy name: Wei WuXian
Known as: the Yiling Patriarch, the founder of demonic cultivation
Birth: October 31
Weapon: Suibian (sword), Chenqing (flute)
Inventions: Spirit-Attraction Flag, Compass of Evil, Stygian Tiger Seal
Likes: spicy food, justice
Dislikes: dogs (cynophobic)

Wei Wuxian is the son of Cangse-Sanren and Wei Changze, and a former disciple of the Yunmeng Jiang Sect.
He died in the first siege of the Burial Mounds thirteen years prior to the start of the novel. He then returned to the living world in the body of Mo Xuanyu, who had summoned Wei Wuxian's soul through a Sacrificial Ritual.