Åke och hans värld was the first movie role for Alexander Skarsgard. The movie was filmed in 1984. The plot for the film with the very young Alexander is based on Åke and his world including his best friend Kalle Nubb. Alexander played this character of Kalle Nubb. According to imdb ”Ake and his world is a long, lyrical study of a Swedish country doctor of the 1930s. Ake is the doctor’s six year old son, from whose point of view the film is told. His best friend is Kalle Nubb. Aake is very frightened of the janitor Bergstroem as well as the lunatic Anne-Marie.” imdb.com page for the film click here:
The videos below are from the Skarsgard channel on Youtube. Yes that is a very young Alexander.