In the mirror universe, Telle was a Cardassian glinn in the Klingon-Cardassian Alliance. In 2371, he served on a ship that was part of the Alliance fleet which confronted the Borg near Rura Penthe. The ship's commander died during the battle, and Telle took command. Telle either died himself during the battle, or fled with the rest of his Cardassian and Bajoran allies. (TNG - Mirror Universe novella: The Worst of Both Worlds)