The father of Ensign Harry Kim, seen with his wife Mary when their son calls home from the Delta Quadrant over the Pathfinder link in the episode Author, Author.
John Kim appears in the Voyager episode Author, Author. Harry Kim speaks of his parents throughout the series as a close and devoted couple who have had no certain news of their only child since Voyager vanished in 2371.
When Starfleet's Pathfinder project opens a few minutes of live contact each day, the crew draws lots for the order of calls. Harry finally sees his mother and father on the screen in astrometrics.
The conversation is affectionate and slightly embarrassing for him, as his parents fuss over him and wonder aloud why he is still an ensign after so many years. It is one of the few glimpses of the families waiting for the crew on Earth.