Kristen Joy Schaal (/ ʃ ɑː l /; born January 24, 1978) is an American actress, comedian, and writer. She is best known for her voice roles as Louise Belcher on Bob's Burgers and Mabel Pines on Gravity Falls , as well as for playing Mel on Flight of the Conchords , Hurshe Heartshe on The Heart, She Holler , and Carol Pilbasian on The Last Man on Earth . -Google
