He had several roles in Swedish films, but in Ingmar Bergman's The Seventh Seal (1957) he portrayed Death as a white-faced man in a black cloak. The decision to perform the role in this way was a joint decision between the actor and director. Bergman wrote in his autobiography Images: My Life in Film that the two men "agreed that Death should wear a clown mask, a white clown’s mask. A fusion of a clown mask and a skull."
