Pelk was a friend to Fesek and the two had a good working relationship. Pelk knew his job and was experienced in life aboard a waste export vessel. He was also very artistic and built models as a hobby. He built a model waste export freighter as a present for Fesek's son's birthday, even though he enjoyed playing with the toy himself. Pelk had a wife named Sivad, although they didn't have any children together.
In 2375, the vessel he served on sprung a leak on a mission to export toxic waste. He and Fesek evacuated and were rescued by USS Voyager. If the ship exploded it would destroy everything within three light years. Pelk joined Fesek and an away team from Voyager to try and seal the leak but was attacked and killed by a mutated core laborer named Dremk. (VOY: "Juggernaut")