Sven (also known as The Mighty Sven) is the deuteragonist of Timothy and the Mime 3. He is a male German-accented famous Atlantic Puffin con-artist who was escaped with Arnold from the Smaug.
Sven first appears at the top of a glacier, high above all the Adelie, chinstrap, Magellanic and little penguins. He tips over into a free fall, but before hitting the water opens his wings and flies. It's quickly learned that everyone believes him to be a flying penguin, as none have ever encountered a puffin.
Sven lands on the grass beside Lovelace, who asks him to share his history with all the adoring fans. Ramón started to clash Sven first, and so Lovelace calls the security to get the Amigos out the show.
When the show continues, Sven's moment is gone as losing his mojo and maybe would do it the following day. Erik wants to ask if his story has flying in it. When Sven asks where the baby penguins are from, Atticus replied that they live from the Emperor-hood (Emperor-Land). Sven is touched by this and therefore dedicates his "...much applauded, heartwarming saga" to Erik.
In the song "The Mighty Sven", there is nothing much to know about Sven's early life and childhood. The movie describes a small portion of Sven's past, but almost nothing can be described what happened to the puffin when he was younger.
He is flying from a tornado hitting his homeland, hoping to escape, but he gets swept up. Feeling tired after flying so far he lands on an iceberg which appears to have three polar bears trying to catch and eat him. Soon he is on the back of a polar bear, on a tiny iceberg, exhausted and sleeping. He then is on a smaller chunk of ice, floating in the water, unconscious to a steamboat. The boat, titled "Researchers Aurora", more than likely to belong to the Aurora Research Institute. The humans try to get him back into shape, but Lovelace was stuck in the oil spill in the Arctic and soon joins him after being saved by the humans. On the deck with Lovelace, he climbs some boxes to see the humans cooking, stuffing, and eating chicken in their mess hall. Thinking that they might become food too, he flies south to the Adélie penguin colony to live in Antarctica permanently, as the Arctic had likely completely melted.