A politically non-aligned species well adapted to surviving in cold
conditions. Their outlook has been shaped by the harsh conditions of their homeworld, such
that many acts deemed of questionable morality by Federation species are looked upon as
necessary to fulfill their obligations by the Breen. The Breen wear refrigerated
suits when exploring most environments considered tolerable by M-class planetary
standards.
For another take on the Breen, check out Owen
Outlon's version. Owen has capitalized on additional information
made available after the release of this template, but the Star Trek
Encyclopedia makes me favor keeping the Obligation Disadvantage.