Board Thread:Questions and Answers/@comment-33274875-20190417222630/@comment-37858760-20190418223502

Exactly it is not a movie but it still fits in the universe of how to train your dragon since there is a mention of the trolls in the movies of how to train your dragon if you want I give you the link of the theory https://www.deviantart.com/whisperthewolfie/journal/Dragon-Theories-Trollhunters-in-the-Same-Universe-725092568