David Stakston (born November 22, 1999) is a Norweigan-American actor. He is best known for his role as Magnus Fossbakken in the Norwegian teen drama Skam, and as Magne Seier in the Netflix fantasy drama series Ragnarok. David Stakston (born November 22, 1999) is a Norweigan-American actor. He is best known for his role as Magnus Fossbakken in the Norwegian teen drama Skam, and as Magne Seier in the Netflix fantasy drama series Ragnarok.