A race of four-eyed bipeds, the batarians are a disreputable species that chose to isolate itself from the rest of the galaxy. The Terminus Systems are infested with batarian pirate gangs and slaving rings, fueling the stereotype of the batarian thug. It should be noted that these criminals do not represent average citizens, who are forbidden to leave batarian space by their omnipresent and paranoid government.
In 2171, humans began to colonize the Skyllian Verge, a region the batarians were already actively settling. The batarians asked the Citadel Council to intervene and declare the Verge an area of "batarian interest." When the Council refused, the batarians severed diplomatic and economic relations, becoming an inward-looking rogue state. Money and weapons funneled from the batarian government to criminal organizations led to many brutal raids on human colonies in the Verge, culminating in the Skyllian Blitz of 2176.
The rest of the galaxy views the batarians as an ignorable problem. The government is still hostile to the Systems Alliance, but beneath the notice of the powerful Council races. It is not known what the average batarian thinks about their enforced isolation, as the Department of Information Control ensures that only government-approved news enters or leaves batarian space.