Master Sergeant Zellmer was a female officer on the Daedalus.
Biography
When Colonel Steven Caldwell and Dr. Nicholas Rush argued over putting the Daedalus in danger in order to complete Rush's mission, it ended with Caldwell ordering Zellmer to take Rush off the bridge and into the brig. Right before she could take him away their ship was then attacked by the Lucian Alliance.
During the firefight with the Alliance's Ha'tak and a swarm of Death Gliders, Zellmer was killed on the bridge. (SGU: "Icarus 2")