Jippeq

From Memory Alpha, the free Star Trek reference.

Jippeq was the Varro captain of a generational ship. This ship, which served as the home of the Varro people, was launched as one single ship in the 1970s but the Varro built more and more segments as the Varro population grew.

In 2375, in an sector of the Delta Quadrant, the generational ship began experiencing difficulties with its warp drive. Fortunately, Jippeq and his people encountered the Federation starship USS Voyager, whose commanding officer, Kathryn Janeway, offered to help repair the Varro ship's warp drive.

While the Voyager crew are repairing the Varro ship, they find micro fractures on the ship's hull. It is revealed that a dissident group that of Varro, who wished to leave the ship and go their separate ways, had infected it with a silicon-based parasite. This parasite was eating away at the linkage holding together each segment of the ship. Once the linkage is broken, the generational ship will break off into separate sections. Jippeq had no choice but to allow the ships to go their separate ways. (VOY: "The Disease")

Jippeq was played by Charles Rocket.