Brex was a Breen who lived in the 24th century. Brex was the Domo of the Breen Confederacy from at least 2382, but was forced to resign in 2384.
In 2382, Brex approved Thot Keer's request for an additional three hundred and thirty-four million sakto to complete the quantum slipstream drive project on Salavat. Brex also took the opportunity to remind Keer that if the project failed the repercussions would be severe. (ST - Typhon Pact novel: Zero Sum Game)
In 2383, Brex attended a summit held by the Boslic in which all the Khitomer Accords and Typhon Pact leaders attended. At the summit, Brex and Grand Nagus Rom came to an agreement in the redrawing of the borders between the Breen Confederacy and the Ferengi Alliance. (ST - Typhon Pact novel: Plagues of Night)
In 2384, Brex was given a vote of no confidence due to a failed mission which resulted in the loss of two of the Breen's top cyberneticists, millions of sakto and the sacrifice of an entire intelligence operation. Brex was to be replaced by Pran. (TNG - Cold Equations novel: Silent Weapons)
