Iccobar

The Iccobar were a warp-capable humanoid race who maintained relations with the Iconian civilization approximately 200,000 years ago. They were extinct by the 24th Century, but Federation scientists studied their language, identifying it to be similar to that of the Iconians, Dinasians, and Dewans.

The Iccobar had a warlike culture, conquering and enslaving numerous worlds throughout the galaxy. Coveting the Iconian civilization's gateway technology, they led an alliance of envious races such as the Dinasians in an invasion of the Iconian empire, bombing Iconia and many other colonies into dead rocks. 

Missions involved

 * : Traveling back in time to shortly before the Iconian homeworld would be attacked, the player encounters Dinasian as well as Iccobar representatives. They express their motives for envying the Iconians and frustration about their refusal to share their technology.
 * : Simulacrums in the Midnight recreation.