Sven is the tritagonist in Happy Feet Two. He is a male Atlantic Puffin who is temporarily mistaken for a penguin and was escaped from the humans because he thought the humans were going to eat him. He was idolozed by all of the adélie penguins and Lovelace until he revealed his true species, making the penguins upset and angry at him for his lies. However, Sven is forgiven by all at the end, and becomes a close friend of Erik and Mumble. He was voiced by Hank Azaria, who also voiced Joska in Immigrants.