Zhao Yun originally serves Gongsun Zan, an early ally of Liu Bei. Often after Gongsun Zan's death, he enters the service of Liu Bei as he was drawn to the man's character and ideals. Depending on the title, he may appear as early as the Yellow Turban Rebellion or the Battle of Hu Lao Gate by Liu Bei's side. He continues to join Shu in their late campaigns against Wu and Wei, such as Yi Ling and Wu Zhang Plains. Prior to the former battle, Zhao Yun is usually the general who openly protests seeking revenge for Guan Yu's death but his pleas fall on deaf ears.