Question: the voice of louise from bob's burgers
Answer: Kristen Joy Schaal ( / ʃɑːl / ; born January 24 , 1978 ) is an American comedian , actress , voice actress and writer best known for current roles as Carol in The Last Man on Earth ( since 2015 ) , as well as for playing Mel in Flight of the Conchords , the over-sexed nurse Hurshe Heartshe on The Heart , She Holler , Mabel Pines in Gravity Falls and Louise Belcher in Bob 's Burgers .