Liu Shan
Before Liu Bei's death, he appointed the chancellor Zhuge Liang and the general Li Yan as regents to his son Liu Shan. The young Liu Shan was only 16 years old, making him the youngest of the rulers of the Three Kingdom states, and Liu Bei expected the two regents to assist Liu Shan in managing state affairs. Zhuge Liang was the "de facto" head of the Shu government throughout Liu Shan's reign and was responsible for most of Shu's policies during his regency.