I designed most of the new characters which happened to be the bad guys and some animals. I also did concepts of extras from the rivaling village. Most of them ended up in the final movie.
The bad guys; Kleppvold, Slåpen, Emanuel Desperados, as well as the vusvol creature were already existing characters from Aukrust's books and had to be adapted from the illustrations. The extras and the goat I had to design from scratch based on Aukrust's distinguished style (he hardly ever drew children and animals, so very little reference was available there).
Check out the trailer here.