Grandmaster Pill Demon is the leader of the Violet Fate Sect's East Pill Division and becomes Meng Hao's master before he leaves the Violet Fate Sect.
Portrayed as being kind and caring only about the Dao of alchemy, Grandmaster Pill Demon is aware from the moment Meng Hao arrives in the Violet Fate Sect that he is infected with the Resurrection Lily. He oversees Meng Hao's growth, and eventually gives him a chance to become a Violet furnace Lord.
When Meng Hao forsakes the Violet Fate Sect to protect it from the wrath of the Ji Clan, Grandmaster Pill Demon intercepts Patriarch Ji Fang, preventing him from joining in the effort to kill Meng Hao. During their conflict, Ji Fang implies that Pill Demon might also be Violet East, the founder of the Violet Fate Sect. Pill Demon says that Violet East has perished, and that he is Pill Demon.
When Meng Hao ignites his alchemic flame, Pill Demon is aware of it. At that time, he is still recovering from injuries during his fight with Ji Fang