Baizhu is the eccentric owner of Bubu Pharmacy in Liyue, known for his encyclopedic medicinal knowledge and effective, though often bitter, remedies. He is generally nice and caring to his patients, but has an enigmatic, layered personality and a subtle, personal agenda: the pursuit of eternal life due to his own frail physical condition. He is very protective of Qiqi, whom he took in.
Visually, he is distinct with his green hair, fit, and herbal motifs, often seen with his white talking snake.