Dragon Wallpapers HD 4K is a unofficial app made by fans where you can enjoy best of The Hidden World pictures and art of your favorite cartoon dragon characters: Toothless, Hiccup Haddock, Astrid Hofferson, Eret, Grimmel, Stoick the Vast, Snotlout, Ruffnut, Valka and Light Fury. App is easy to use and all wallpapers are high quality, optimized for mobile phones.