Astapori ruling council

The Astapori ruling council is an organization established by Daenerys Targaryen to rule over the city of Astapor after overthrowing the Good Masters.

However, not long after Daenerys conquers Meereen, news arrive that the council has been overthrown by a man named Cleon.

In the books
In the A Song of Ice and Fire novels Daenerys leaves Astapor under the rule of a council of three men, a healer, a scholar and a priest. However, Cleon leads the people to believe that the three intend to return the Good Masters to power. Naming himself king after he has the council executed, he has all the highborn boys of the city seized to begin training new Unsullied.