Louise Belcher is voiced by Kristen Schaal, who also voiced Mabel Pines from Gravity Falls, Trixie from the Toy Story franchise, Jake Jr. from Adventure Time, Barb from Cloudy with a Chance of Meatballs 2, Tiffy from Archer, Shannon from Despicable Me 2, Sugar from Scared Shrekless, Sarah Lynn from BoJack Horseman and also played Carol Pilbasian from The Last Man on Earth.