A Bolian Starfleet petty officer on Deep Space 9 who is the third person killed by the Vulcan sniper Chu'lak in 2375.
Zim Brott is the last of the three victims in the Deep Space Nine episode Field of Fire. A Bolian petty officer, he is shot in his quarters in the same impossible manner as Lieutenant Hector Ilario and Lieutenant Commander Greta Vanderweg, by a chemically propelled bullet that seems to come from nowhere.
His death gives Ezri Dax the pattern she has been missing. The three had different ranks, species and duties, but each had a picture on display showing friends or family laughing.
With that, and with the instincts of the Dax symbiont's killer host Joran, Ezri identifies the science officer Chu'lak, who had come to hate displays of emotion. She catches him as he lines up a fourth shot, aimed at her.