What happened to Birger and Lillebror
Several times in the Olsenbanden series(at least in the Norwegian series), we meet Kjells son Basse. He's being confirmed, married, divorced and married again, and later he's getting jailed in Dartmore Prison because of some sort of crime with diamonds.
But Kjell had also to other children(which we meet in the first movie): Birger(older than Basse) and Lillebror(younger than Basse). If I'm not wrong, we never hear from them again(except from the fact that Basse is called Birger in the second movie, but I do not count that). DO anyone have an idea about what happened to them?