In 2371 of an alternate timeline, Ensign Harry Kim encountered an alien from a temporal inversion fold, who had taken the form of a Human named Cosimo. The alien told Harry that the creation of the alternate timeline was a result of Harry intersecting with one of his race's timestreams in a shuttlecraft. Cosimo then detailed to Harry how he could recreate the accident, thereby repairing the damage to the timeline, though Harry retained his memories of the events. (VOY: "Non Sequitur")