The Ecumene Council was the main government and lawmaking body of the Forerunner ecumene. It was located at the Capital. Lead by the First Councilor and composed of five hundred Councilors from various rates, the Council was supported by a network of ancillas known as the Council metarchy. The Council's dedicated security force was known as Council Security.
Councilors typically served for a thousand years and took vows of abstinence and austerity. This was apparent in the general aesthetic associated with the Council; their ships and residential facilities lacked luxury or adornment, yet reflected the Council's status and power.
After the Battle of the Capital the survivors of the Council were reconstituted into what was referred to as the "New Council". Soon after the Flood took over the Capital system, the remaining Council members escaped to the greater Ark with the Master Juridical.