Lorentz & Sakarias was a group that has collaborated with the actor best known for which role in the series "Vikings"?
Lorentz &amp; Sakarias:  They have collaborated with jj, Duvchi, Newkid and Gustaf Skarsgård. Gustaf Skarsgård:  He is best known outside Scandinavia for his role as Floki in the History Channel series "Vikings" as well as for his roles in the films "Evil" (2003), "The Way Back" (2010) and "Kon-Tiki" (2012).
Floki