Sklar

Sklar was a Nezu exogeologist whose planet was being bombarded by asteroids. He, along with Tuvok and Neelix, attempted to find Dr. Vatm, who had discovered that the asteroids were artificial and controlled by the Etanians who wished to take over Nezu. They rescued Vatm, but their shuttle was damaged. They used a space elevator connected to a Nezu space station in order to return to USS Voyager. On the ride up, Dr. Vatm was poisoned by Sklar, who was working for the Etanians. He tried to kill Tuvok as well, but Neelix prevented that, and Sklar died when he was pushed out of the space elevator. 

Sklar