|Film||Happy Feet Two (2011)|
|Video Game||Happy Feet Two: The Video Game|
|Hair Color||Black and white|
|Friends/Allies||Mumble, Erik, Gloria, Atticus, Ramón, Raul, Nestor, Lombardo, Rinaldo, Carmen|
Sven is a puffin, possibly from a North Eastern Atlantic colony. He has a rainbow-coloured beak, similar to the atlantic puffin. He also has two tufts on the back of his head which is similar to the tufted or crested puffin. It's possible that he is both a puffin species at once (a hybrid).
Sven is very lovable and is also a flirty bird. He is the one who makes himself look better than all the creatures in Antarctica because of his ability to fly. He has no faith in himself, just in Lovelace's ability to make him seem extremely powerful, which isn't hard given the level the other penguins go to believe in him.
Sven always thinks that he is the hero of all penguins in Adélie-Land because of his ability to fly (a power that no other penguin has, at least no real penguins).
He is quite caring, flighty (fidgety and moves one place to the other) and flirtatious bird. Also, around the Adélie colony, he talked himself up a lot. He can be quite scared too, like when Mumble needed the penguins to find a route to the sea and he denied because he was scared of the Aliens (humans) due to his earlier experiences. But he has a caring side too, like when he tried to save Erik when he fell down the Doomberg (But failed because Lovelace fell on him). He also supported Mumble with saving the emperor penguins by showing everyone a strange, yet funny dance. Also, he confessed he was a different species of bird, before flying off, that he enjoyed the famliy the Adelies gave him and thanked them. He also has a sense of extreme braveness to him as all his life he has lost and found a number of families that he thinks might accept him as one of them.
Despite the difference in species, he's strongly attracted to Gloria, flirting with her (rather shamelessly) when Mumble asked him to give her some fish. He even said that he thought that Gloria was a "Hottie."
Sven is also one of Erik's best friends and is forgiven by him after the Doomberg incident.