Lors

 was a man from Saturn who was due to be deported to Titan as he had reached one hundred years of age. He, his wife Raich, and two friends, Reen and Wend, tried to stay on Saturn but were eventually deported. Lors met the Fifth Doctor and attempted to escape Titan with him, but he decided to go back so he could stay with Raich. (PROSE: Saturn (short story))