Guo Zi Fan, born in Qingdao, Shandong province, is a Chinese singer-actor, and a member of the Chinese male pop group "X-NINE".

In 2015 while still in high school, after participating in the youth network drama "Seventeen Blue", he joined Zhejiang Satellite TV "Burning Boy" youth talent program to become a trainee of Tianyu, and was screened to become one of the 16 recorded program contestants, thus making his official entry into showbiz. In February 2016, he and his team mates, namely Wu Jiacheng, Gu Jiacheng and Zhao Lei, debuted officially as "X-Fire". In September of same year, Guo participated in the "X-Nine Youth League" debut conference, marking his official debut as a dancer at the same time. In 2017, he was admitted to the Beijing Film Academy with the first place in the performance department in the country.