Imperium of Man

The Imperium of Man are a classic example of an "Evil versus Evil" archetype and one of the main factions of the dark science-fiction table-top game known as Warhammer 40,000.

The Imperium of Man would be considered villains under any other setting yet due to the excessive viciousness of their many enemies and the general Crapsack World themes of Warhammer 40,000 they are often portrayed as humanity's last hope (though only the most hardened of souls would truly call them "heroes").