The Breen are a reclusive, powerful, and warlike humanoid race, native to the planet Breen in the Alpha Quadrant.

Shrouded in mystery, the Breen are one of the most underestimated races inhabiting the Alpha Quadrant.

Historically, the Klingons were among the first to discover the consequences of underestimating the Breen. During the Klingon Second Empire, Chancellor Mow'ga ordered an entire fleet of Klingon warships to invade and conquer the Breen homeworld. The fleet never returned and was never heard from again.

Notes of Intrest

Even to this day, there is little anyone knows about the Breen. The Breen did ally themselves with the Federation for a brief stint during the Rukakon War but have since returned to seclusion. For the most part, they have kept their borders closed for centuries and remain closed.

For more information regarding the Breen, visit the link Breen - Memory Alpha