You are a Mystery Dragon Rider. Your name is Crescent, and you have a dragon named Wave. A Sea Fury Dragon, to be exact. You were related to Viggo and Ryker Grimborn. One day, you guys got shot down by Hiccup and his friends. Astrid, Snotlout, Fishlegs, Ruffnut, Tuffnut, Heather, and Dagur

Hiccup: "Oh, I hit it! Oh my God, I did it!"

Snotlout: "Good job!"

Astrid: "Now what?"

Fishlegs: "Let's go study it!"

Ruffnut: "That's boring!"

Tuffnut: "Ooo, I can't wait to see it!"

Heather: "It looked familiar..."

Dagur: "Ya... Too familiar..."

Toothless was sitting beside Hiccup. Meatlug beside Fishlegs, Stormfly by Astrid, Hookfang by Snotlout, Barf & Belch by Ruffnut & Tuffnut, Windshear by Heather, and Sleuther by Dagur

[This was during Dragon's Edge S3 Ep11: "Family On The Edge"]

Uh oh...

They all remembered meeting the Grimborn Brothers... Viggo and Ryker Grimborn... They met Viggo a few months ago