The Outcasts attack Berk in the episode "Alvin and the Outcasts", searching for the alleged 'Dragon Conquerer'. Sven scouts out the make-up of the invading for and reports to Chief Stoick in the Great Hall that he "saw thirty men at least, all armed to the teeth."
Attempting to Capture the Scauldron
In the episode Dragon Flower several Blue Oleander flowers were planted on the Isle of Berk by Mildew in an attempt to get all of the dragons sick. Once this was discovered, Sven joined Hiccup, Stoick, Gobber, an unwilling Mildew, and a few other Vikings in pursuit of the Scauldron, a dragon whose venom is the only cure for Blue Oleander poisoning. Once the Scauldron was found and roped, Stoick ordered Sven to throw a barrel into the Scauldron's mouth to keep it open so Hiccup could collect the venom in a bucket. Unfortunately, the Scauldron was easily able to break the barrel. It then lifted its tail out of the water, which it used to knock Sven far off into the ocean.
Unaware of the Twins
The Twins pretend to be statues in "Appetite for Destruction". Sven walks by, unaware the Twins are there.
Missing his Grandmother's Goblets
Sven is seen talking with a Berkian woman in "Smoke Gets in Your Eyes", saying that his grandmother's goblets were among the metal objects that were stolen from the village the night before. He is later seen talking with another villager as Hiccup walks by, and the next day is seen pushing an apple cart, which falls apart since the Smothering Smokebreaths took all the metal hardware that had been holding it together. He's also briefly seen in the crowd as Stoick and Hiccup address the village in how to get their metal back.
Hoping for a Viking Funeral
In "Cast Out, Part 1", Sven is one of a number of Vikings asking if Snotlout is dead, and getting excited for a funeral. He's disappointed to see that Snotlout was in fact still alive. He's later seen in the Great Hall during Alvin's trial, and is the one to escort Alvin to Berk's jailhouse.
Like most Berkian men, Sven has a solid stocky build. He has a full head of brown hair and an even fuller beard. His facial hair appears to be smooth and straight, allowing it to be plaited at the end. Sven has a standard two-horned helmet and a maroon tunic.
Sven's appearance in "Dragon Flower" is different than other appearances. His beard and hair are a lighter shade of brown and much more bristlier. His build is slightly thinner and his helmet has four horns on it - two small and two large. Sven's appearance in "Dragon Flower" is vastly different from all other appearances suggesting that there might be two different Svens, although both are voiced by Brook Chalmers.
|Riders of Berk|
|1. "How to Start a Dragon Academy":||Absent||11. "Heather Report, Part 2":||Absent|
|2. "Viking for Hire":||Absent||12. "Thawfest":||Absent|
|3. "Animal House":||Absent||13. "When Lightning Strikes":||Absent|
|4. "The Terrible Twos":||Absent||14. "What Flies Beneath":||Absent|
|5. "In Dragons We Trust":||Absent||15. "Twinsanity":||Absent|
|6. "Alvin and the Outcasts":||Appears||16. "Defiant One":||Absent|
|7. "How to Pick Your Dragon":||Absent||17. "Breakneck Bog":||Absent|
|8. "Portrait of Hiccup as a Buff Man":||Absent||18. "Gem of a Different Color":||Absent|
|9. "Dragon Flower":||Appears||19. "We Are Family, Part 1":||Absent|
|10. "Heather Report, Part 1":||Absent||20. "We Are Family, Part 2":||Absent|
|Defenders of Berk|
|1. "Live and Let Fly":||Absent||11. "A View to a Skrill, Part 2":||Absent|
|2. "The Iron Gronckle":||Absent||12. "The Flight Stuff":||Absent|
|3. "The Night and the Fury":||Absent||13. "Free Scauldy":||Absent|
|4. "Tunnel Vision":||Absent||14. "Frozen":||Absent|
|5. "Race to Fireworm Island":||Absent||15. "A Tale of Two Dragons":||Absent|
|6. "Fright of Passage":||Absent||16. "The Eel Effect":||Absent|
|7. "Worst in Show":||Absent||17. "Smoke Gets in Your Eyes":||Appears|
|8. "Appetite for Destruction":||Background||18. "Bing! Bam! Boom!":||Absent|
|9. "Zippleback Down":||Absent||19. "Cast Out, Part 1":||Appears|
|10. "A View to a Skrill, Part 1":||Absent||20. "Cast Out, Part 2":||Appears|
- Both of Sven's character bodies are also used to animate unnamed background Vikings throughout the franchise.
- Sven's character is named in a scene in the Great Hall in "Alvin and the Outcasts", but in the same episode the character body is later seen on a ship that is then greeting on its return by the same character body, putting "Sven" in two places at once. The bodies even have the exact same clothes on.
- Sven appears in "Cast Out, Part 2" but doesn't have a speaking role although his voice actor provides the voices for another man who is simply listed in the credits as "Berkian Man".
- Sven Fever. (Date Posted - November 15, 2013). therealsven - Tumblr.
- Gunnar. (Date Posted - September 26, 2013). ''therealsven - Tumblr.