Inceptum Cacumen

Inceptum Cacumen is the current moniker given what is believed to the government of the "Leviathan" of 2181 Despoina or their equivilent of one.

Post-Reaper War
What became of the Leviathans after the Battle of Earth is unknown, however; it is presumed that they are alive and are presumed to be hostile to the rest of the galaxy.

Trivia

 * "Inceptum" is the latin term for "Beginning" and "Cacumen" is latin for "Top" or "Apex" thus meaning "Beginning Apex" which refers to how they believe themselves to be the galaxy's first and only "Apex Race"