Talk:Changewing/@comment-37567619-20190207051842/@comment-24413325-20190310180859

The Changewing's hypnosis ability originates from the Book of Dragons short, so it is 100% canon. Silkspanners were unknown to Berkians before Dragonvine, even to Valka, so there was no way of anyone ever mentioning it. The Submaripper, though not appearing physically, is present on Hiccup's maps and Fishleg's dragon cards, and appears in The Serpent's Heir, so it definitely exists in the Movieverse. Simply because an already established bit of content doesn't make an appearance in the movies, doesn't mean it is not canon. Snaptrappers for example, have only ever made one appearance, but they are still regarded as canon to the movies.