The Hegemony is the De facto 'Human Power' ruling over a large stretch of space within the Orion Arm of the Milky Way. The Hegemony strives to unite all of the human factions into one massive Empire for humanities ensured survival.
As can be expected they are lead by a individual known as: The Hegemony who is elected for decade long terms by a 'Council of Dominions' who are made up of Councillors elected by the people of said Dominions