Second of two movies where 'Kriminalbetjent Hermansen' is not featured. Sverre Wilberg passed away in 1996, three years before this movie.
Kim Haugen (Grønn-Larsen) is the son of actor Per Theodor Haugen who played the 'Lieutenant' in Olsen-banden tar gull (1972).
When Egon is looking for a bathroom, he finds the Costume Department, and inside a suit and bowler hat that resembles his old get-up. This means that Egon isn't wearing his original clothes from the 13th previous movies through-out the movie.
Only movie not to open with the iconic shot of the prison, Botsen (Botsfengelet).