They had to appear in a minimum of three episodes to be included. All variations such as mirror or alternate universe, different timelines, etc are included under the one name--so if you like the Intendant then vote for Kira--otherwise it ends up as a huge list.
Commander Austin Harris, First Officer, Deep Space Nine (by FltCpt. Bossco)
8.01 - Darkest Before Dawn
(Chapter 8 added, 12/09/2015)