Crusaders of the Cosmos

Galaxy Info, Part 7

Breen: The Breen were a spacefaring humanoid species native to the planet Breen in the Alpha Quadrant. Notoriously reclusive and warlike, the Breen were a formidable power in their region of the galaxy. They almost always wore refrigeration suits that entirely concealed their bodies.
The Klingons were among the first to discover that the Breen did not tolerate incursions into their space. 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.
Even by the 21st, much was still unknown about the Breen and their government, known as the Breen Confederacy.
The Federation had limited knowledge of the Breen, however, and was aware of Breen outposts located in Sector 97.
Breen privateers during the 21st century often conducted indiscriminate raids against other species. This included the Breen attack and capture of a Cardassian Central Command vessel, the Ravinok. The survivors of that attack were used for slave labor in Breen-operated dilithium mines on Dozaria.
The Breen were hairless, pale green humanoids with two distinct forms: a solid form, and a gelatinous form in which their tissues were translucent and flexible. Breen culture taught that the gelatinous form was their true face, whereas the solid form represented a "weak" evolutionary throwback.

that of most humanoids, and was largely unknown to Federation science even in the 21st century. They had vital organs, but no blood or other liquid circulatory system. Exposure to a specific blend of subzero gases triggered a unique immune system response and somatic cell regeneration that could potentially allow a Breen to recover from life-threatening injuries.
The Breen had male and female genders. They experienced pregnancy, often at a young age; newborn Breen were referred to as "hatchlings".
Breen entertained and taught their offspring with nursery rhymes. A particular example of a Breen nursery rhyme was made up of a heterophonic, five-line verse with an alternating tetrameter and pentameter structure. These were nonsensical phrases, strung together because they rhymed (at least to the Breen). Breen music which accompanied this nursery rhyme was written on a Lyxian scale.

Married Breen scarred themselves with matching symbols on their forearms. Marriage to a non-Breen was considered to be an "abomination", but even so the partners were legally entitled to stay together in life or death.
Breen culture was rigidly hierarchal.
The Breen confederacy was ruled by a royal caste called the Yod-Thot, which included the primarchs. Ruhn was described as being "Breen Primarch of the Sixth Flight.".
Yod-Thot roughly translated was "they who rule". They were often involved in power struggles for control of the confederacy.
The Breen rank structure included the title thot, which was implied to be greater than that of a Cardassian legate.
The Breen were originally ruled by a Breen Emperor, but after the last emperor's death the disparate branches of the royal bloodline began making competing claims for the throne, resulting in a civil war between six primarchs. Ruhn's nephew L'ak was the last direct descendant of the emperor and as such, he was considered to be the Scion of the Breen Imperium. If one of the primarchs could control L'ak, they would have a legitimate claim to the throne. Moll - the wife of L'ak - was treated with respect by most Breen she encountered because of her marriage, with one even protesting to Ruhn's orders for them to detain Moll, although the primarch considered the union between his nephew and Moll to be an abomination.
According to some sources, genocide was a necessity to the Breen and their version of the Prime Directive.
Breen medics, could be distinguished by a glowing symbol in the middle of their armor.

The Breen hold great reverence for their culture and history. They have at least two known oaths: a blood bounty called erigah which could only be released by the Breen themselves; and a sacred oath called a tergun, where they swear upon the actions and the subjects within those words (and only within those), and breaking such an oath could cause the oath breaker to be hunted down by the other Breen for their dishonor.