F'lon is mentioned in Dragonflight, the first book published in the series, as the father of two of its main characters, F'lar and F'nor. However, not much was known about him until Anne McCaffrey wrote a prequel, The Masterharper of Pern. In this book, which is set in the Eighth Interval, we meet Falloner, as he was known as a child, through the eyes of his best friend Robinton. Like his father S'loner, F'lon believed that deadly Thread would return to devastate Pern, although it had not fallen for hundreds of years, and endeavored to prepare Pern for its menace. F'lon's first love was Larna, a girl who he grew up with in Benden Weyr. After she died giving birth to F'lar, he became the partner of Manora, the weyr's Headwoman, and later (to his disgust) the weyrwoman Jora.
F'lon is similar to his son F'lar in several ways, including his curly dark hair and unusual amber eyes. However, F'lon doesn't have his "head screwed on" as well as F'lar, and often does foolish things out of emotion. This led to his murder by Gifflen, an assassin hired by Fax, the greedy "Lord of Seven Holds."