These Human colonists existed in an alternate timeline on the planet Gaia created by the starship Defiant's crash landing on Gaia. Their existence was erased when the Defiant avoided the crash and that timeline was averted. (DS9: "Children of Time") These colonist were played by background performers who received no credit for their appearance. Several costumes of them were sold off on the It's A Wrap! sale and auction on eBay. [1] [2] [3]