Elämäkerta: From Wikipedia, the free encyclopedia Daniel "Danny" Jacobs (born July 7, 1968) is an American voice actor, best known as the voice King Julien XIII the ring-tailed lemur on the Nickelodeon television series, The Penguins of Madagascar. Description above from the Wikipedia article Danny Jacobs (actor), licensed under CC-BY-SA, full list of contributors on Wikipedia.