The story about Karlsson's six boys, who makes mischief in the fictional town of Östköping.
Bo Rosengren
as Harald Karlsson
Rolf Bengtsson
as Axel Karlsson
Hans Schröder
as Rudolf "Rulle" Karlsson
Sven-Axel Carlsson
as Edgar Karlsson
Lasse Sarri
as Eskil Karlsson
Paul Roland Bratt
as Valter "Valle" Karlsson
Birgit Rosengren
as Gun Lind
Åke Engfeldt
as Walter Åberg
Gösta Cederlund
as direktör Stig Lind
John Botvid
as Aroselius aka Klåtten
Douglas Håge
as Karlsson
Elof Ahrle
as Roland Glantz
