Unnamed Breen
The following is a list of unnamed Breen.

Engineers 
()

Gor's aides  
These two Breen served as aides and guards for Thot Gor in 2375. They were present when the Female Changeling decided to retake the Chin'toka system and during the second Battle of Chin'toka. They also witnessed the subspace transmition from Damar revealing the Cardassian rebellion. ()

Guards on Breen ship 
These guards served on Gor's ship and guarded Ezri Dax and Worf, both held as prisoners. They interrogated them separated from each other and transported them later onto another ship as a gift for the Female Changeling. ()

Guards on Dozaria  

Eight guards manned a dilithium mine where the survivors of the Ravinok were used as slave labor on Dozaria. Kira Nerys and Dukat freed the survivors in their rescue of Tora Ziyal, Dukat's daughter. All eight were either killed or incapacitated. ()

Holographic Breen

Palio pilot
Allegedly, the Ferengi were attempting to bribe a Breen pilot to throw the 2370 palio at Deep Space 3. ()

Prisoner

Surrender attendee 

This soldier attended the signing of the treaty that ending the Dominion War. ()

Breen
Breen