List of unnamed Tarkaleans:
This female Tarkalean was assimilated by the Borg. The Borg were two drones found in the Arctic ice. They were from the Borg sphere that traveled back in time to stop Zefram Cochrane from making First Contact, but were stopped by the USS Enterprise-E, captained by Jean-Luc Picard. The drone's nanoprobes make repairs and the drones are reactivated. The female Tarkalean was on a freighter that was attacked by the Borg who had assimilated the scientist team that found them. Enterprise answered her ship's distress call, and transports her and a male Tarkalean aboard.
Phlox tries to cure her, but is unsuccessful. Finally the she and her companion attack Phlox with assimilation tubules and attempt an escape. The drones have been trying to modify the ship systems. Jonathan Archer decided to vent the area and ejected the drones into space, thus killing them. (ENT: "Regeneration")
The male Tarkalean was a member of a freighter attacked by Borg who had been thawed from the ice in the Arctic by an Earth science team. They were from a Borg vessel that had traveled back in time in an attempt to stop Earth's first contact with the Vulcans. Captain Picard had followed them back in time and destroyed the Borg ship. He and his companion were brought aboard Enterprise, where they attacked Phlox, and tried to modify the systems of the ship. Archer blew them out of an airlock, killing them. (ENT: "Regeneration")