Neelix dreamed of them when he relived the horror of watching his family and fellow Talaxians incinerated by the metreon cascade. This dream was brought on because Neelix feared that Naomi Wildman might face the same thing when her mother might be lost in the crash of the Delta Flyer. (VOY: "Once Upon a Time")
These close to five hundred Talaxian colonists settled on an asteroid in an asteroid field and were threatened by an alien miner, Commander Nocona, who tried to send them away and take the ore from their asteroid. They built a colony under the surface of the asteroid and were headed by Oxilon. In 2378, USS Voyager discovered the colony and sent an away team to visit. Neelix decided to stay with one of the colonists, Dexa, and her son Brax. (VOY: "Homestead")
Talaxian metreon cascade victim
These two Talaxian officers were part of the force led by Tom Paris to rescue the Voyager crew and recapture the starship after it had been seized by the Kazon. Together with their Commander Paxim they beamed aboard Voyager and manned the bridge stations. (VOY: "Basics, Part II")
This unnamed Talaxian male was one of 23 Talaxians aboard a Talaxian ship that were taken prisoner by the Vidiians in 2365, and forced to do hard labor, digging tunnels at the Vidiian base on Avery III.
He was encountered by Tom Paris, in 2371, when he explained that he was the last of the survivors from his ship; the others had been harvested for their organs. He was almost mad. He laughed at Paris, who wanted to escape, telling him there was no escape, and the only way to live was to stay physically strong, but added that even doing that would not save him from having his organs taken. (VOY: "Faces")