Mu He

Mu He was Mu Ningxue's uncle and Mu Bai's father(although this is only revealed during Xian incident, and this is a secret with few people knowing, publicity he is thought of as Mu Bai uncle). He was a Big Deacon, leader of the Blue Deacons, in the Black Vatican under Salan's orders and when Mo Fan stopped the Black Vatican's plans in the ancient city Salan killed him. Due to him revealed being a member of the Black Vatican, it destroyed the Mu Family of Bo City

You can see his face In ch 427(manhua).