Kathy Altieri was Production Designer on How To Train Your Dragon. A Production Designer oversees all of the visuals on a film from beginning to end, and makes sure they support the story the directors are trying to tell.
Alessandro Carloni was Head of Story on How To Train Your Dragon. He was responsible for the story telling of the movie and for leading the Story department into developing the first visualization of the story, translating the original written ideas of the movie into images.
These clips are part of a roundtable discussion held for press in Dallas. It has interviews with directors Dean DeBlois and Chris Sanders (Lilo & Stitch).
In an article at CGsociety Ring said:”The biggest challenges were the characters. Vikings are not simple guys to rig.” The Viking wardrobe and hair styles were imperative to the story but animating layers of furry wardrobe was not for the weak of heart.