The two old actors and some trivia
Its probably obvious that Kobba and Aunt Kozy were younger people using make up.
Here is the real picture of Aunt Kozy
http://ap.mnocdn.no/images/788535f0-6cb6-40bb-834d-b4225e1e0212?fit=crop&h=810&q=80&w=1440
Kobba.
http://gfx.dagbladet.no/labrador/309/309169/30916913/jpg/active/826x550.jpg
Several of the actors in Hellfjord also stars in these movies.
Dead Snow 1 and 2.
Kill Buljo 1 and 2 (Kill bill parody)
Hansel & Gretel - Witch Hunters
The curly blonde journalist is the actress also starring as Atalanta, the bow and arrrow female in Hercules with Dwayne Johnson. Aksel Henie also from Norway plays Tydeus in the same gang.