Marco Ilsø (born 29 September 1994) is a Danish actor. His first acting role was as a 14-year-old, playing the lead in 24 episodes of Mikkel og guldkortet. Since season 4, he has played Hvitserk in Vikings.
Around 1014 AD, an exiled Norseman named Haraldr ends up fighting for the Norse–Gaelic warlords of Ireland but when they fight against King Brian Boru, Haraldr fights for survivance while he remembers his life.
