User blog comment:Megadracosaurus/Night Fury Theory/@comment-1584640-20151119172925

It is also stated in HTTYD 2 that Drago Bludvist came from a distant, strange land, and that his cape could be made of Night Fury hide. So it is possible that there are more Night Furies where Drago originated from, and since Drago's character will be fleshed out more in HTTYD 3, it is probable that we will also get flashbacks of Toothless' past and how he came to the Archipelago. This is of course, just a speculation.