Cathal O'hallin appears in Vikings as Hvitserk.
Cathal O'hallin in Vikings
The portrayal
Hvitserk
Cathal O'hallin portrays Hvitserk in Vikings.
Hvitserk is one of Ragnar and Aslaug’s sons. His struggle to choose a place among his brothers becomes a story about allegiance, grief and the wish for purpose.
Follow the character’s journey, loyalties and place in the wider saga.
Explore Hvitserk’s story