Fin is the husband of Applejack and the father of her kids. He appears in Like Mother Like Daughter, Grounded, Far from the Tree, Just Around the Corner and A Drink Between Friends. See stories below:
https://www.fimfiction.net/bookshelf/1294304/bright-future?order=latest


He was once part of the Equestrian Infantry and now works as the head Detective of Ponyville's Police Department. Fin is a smart guy who was traumatized by his time in his deployment and came home a broken stallion. Years later, he recovered from the trauma, but can't help but keep throwing himself back into the worst the world has to offer over and over again. He deliberately takes the most gruesome cases the department gets, and in a city with ten million people, they are unfortunately not hard to find. Applejack is really the only pony he can bounce his thoughts off of and she solves half as many cases as Fin does, but lately, as his oldest son has reaches his twenties, he discusses with him as well. He's friends with the other dads, Big Mac, Soarin, Cheese (senior) and Discord.