Sven's Nightmare is a Monstrous Nightmare ridden by Silent Sven.
- "Not a typical Monstrous Nightmare, this stealthy Dragon blasts poison instead of flame. Giving Vikings a very silent fright."
In "Team Astrid", Sven chose this monstrous nightmare as his dragon following Dagur's attack on Berk when he joined Astrid's Dragon Riders' Auxiliary. He then assisted in defending Dragon's Edge from Dagur's fleet.
As shown in "A Time to Skrill", Sven and his dragon joined Gustav, Spitelout, and Gothi in taking on the Skrill that attacked Berk. However, like the others, the Nightmare and his Rider were shot down.
Sven's Nightmare is lime green in color with orange wing tips and dark green blotches on its body.
- According to Rise of Berk, Sven's Nightmare shoots poison instead of fire.
- However, he has been seen shooting fire in Race to the Edge, so this is likely just a mistake.
|Dragon Characters of
|| Fireworm: Flashfright • Royal Fireworm • Snotlout's Fireworm Queen|
Hobblegrunt: Gruff • Primal Hobblegrunt
Moldruffle: Exotic Moldruffle
Monstrous Nightmare: Astrid's Monstrous Nightmare • Brisket, Saddle, Chuck, Rump, Loin, Scrag, Cutlet, Ham Hock, Sausages, Offal, Knuckle, and Pot Roast • Cagecruncher • Exiled Monstrous Nightmare • Fanghook • Firescrapes • Girl Hookfang • Hookfang • Hookfang's Mate and Offspring • Hookfang's Nemesis • Hookfire, Fangmaster and Hookblazefang • Sven's Nightmare • Valka's Mercy • Whip-Slash
Night Terror: Darkvarg • Hotshot • Nightwatch • Sacred Terror • Seedling Night Terror • Smidvarg
Singetail: Deathlout • Flamelout • Heatlout • Hotlout • Krogan's Singetail • Scorch • Stoick
Terrible Terror: Butt and Head • Gothi's Pet • Iggy • Kick-off Terrors • Leopold • Pain • Sharpshot • Sneaky
Typhoomerang: Helpful Typhoomerang • Skyfire • Torch • Torch's Mother • Torch's Siblings • Trap-phoomerang