Seth (The Horns of Nimon)

Seth was one of the Anethans who had been taken by the Skonnans to be a sacrifice for the Nimon. An orphan, he was adopted and mistaken for a lost prince of Aneth. He and his fellow prisoner, Teka, helped the Fourth Doctor and Romana defeat the Nimon, and together they returned to Aneth. (TV: The Horns of Nimon)