Egon's plans often bring the gang into perilously close contact with white-collar criminals from the Danish business (and political) elite. For example, in one episode some well-connected people try to make money out of the so-called "butter mountain", a huge amount of butter bought up and stored by the EEC (now the EU) to keep prices up. Egon Olsen learns about this from a lawyer who is serving prison time, and the gang interferes with the plan to secure the millions for themselves. But as always, Egon – after having succeeded with a genius plan – loses because he underestimates the power and unscrupulousness of these people.
Egon is usually arrested in the end because the police cannot get to the "big fish" and have to find a scapegoat. Superintendent Jensen (Hermansen in Norwegian) tells his younger colleague, inspector Holm: "The only thing the police can do when the real big criminals come by is offer them protection!" This kind of social satire is one of the defining features of the Olsen Gang films.
In the early episodes, harsh language and soft-erotica (temptingly dressed women) were more freely used than in later versions, which were censored to suit youngsters.
The Norwegian versions of the movies also have another character, 'Dynamite Harry', as the little brother of Benny Frandsen – he is the demolition expert (although his nerves are very easily shaken due to years of having dealt with explosives and alcohol). Harry made an appearance in six Norwegian films, played by Harald Heide-Steen Jr.. He also appeared in two early Danish Olsen Gang movies, then played by Preben Kaas. In the Swedish Jönssonligan movies Harry showed up in the second movie, and became a regular member of the gang from the next installment on, since the actor who played the original member, a Finn named Rocky, had died. In the Swedish version, Egon was replaced by Charles-Ingvar "Sickan" Jönsson, with a slightly different costume and mannerisms, and in later films when the actor Gösta Ekman got tired of the character, yet other leaders, who never became as popular as "Sickan". Benny's part was taken by "(Ragnar) Vanheden", a small-timer from Stockholm.
Several elements recur in the movie series. Usually, can note the main sponsor by looking at the villain's cars, the security cars, the police cars, the gang's car, and so on. Usually, Toyota has been the main sponsor of the movie series, supplying the movies with civilian cars parked on the sidewalks, Crowns as taxi's, Toyota Cressida as police cars, Hiace as security vans and money transports, and so on. There have been exceptions, notably Olsenbandens aller siste kupp (The Olsen-Gangs very last coup) from 1982, which was sponsored by Datsun.
Most of the Norwegian movies have been digitally restored. The discs include English & Norwegian Subtitles, 16:9 format and Dolby Digital 1.0 surround sound.
DVD Release List:
| Original title | Translation |
| Olsen Banden | The Olsen Gang |
| Olsen Banden på spanden | The Olsen Gang in trouble |
| Olsen Banden i Jylland | The Olsen Gang in Jutland |
| Olsen Bandens store kup | The Olsen Gang's grand burglary |
| Olsen Banden går amok | The Olsen Gang goes crazy |
| Olsen Bandens sidste bedrifter | The Olsen Gang's last accomplishments |
| Olsen Banden på sporet | The Olsen Gang on the (rail)track |
| Olsen Banden ser rødt | The Olsen Gang snaps |
| Olsen Banden deruda' | The Olsen Gang full speed ahead |
| Olsen Banden går i krig | The Olsen Gang goes to war |
| Olsen Banden overgiver sig aldrig | The Olsen Gang never surrenders |
| Olsen Bandens flugt over plankeværket | The Olsen Gang's escape over the fence |
| Olsen Banden over alle bjerge | The Olsen Gang long gone |
| Olsen Bandens sidste stik | The Olsen Gang's last trick (as in cards) or last sting |
| Original title | Official English title | Translated directly | Translated contextually |
| Olsenbanden: Operasjon Egon | The Olsen Gang: Operation Egon | The Olsen Gang: Operation Egon | |
| Olsenbanden og Dynamitt-Harry | The Olsen Gang and Dynamite-Harry | The Olsen Gang and Dynamite-Harry | |
| Olsenbanden tar gull | The Olsen Gang takes gold | The Olsen Gang wins (title is a pun, since the gang literally "takes gold" in the movie) | |
| Olsenbanden og Dynamitt-Harry går amok | The Olsen Gang and Dynamite Harry run amuck | The Olsen Gang and Dynamite-Harry go amok | The Olsen Gang and Dynamite-Harry goes crazy |
| Olsenbanden møter Kongen og Knekten | The Olsen Gang meets the king and the jack | The Olsen Gang meets The King and The Jack (The King and The Jack being the handles of the movie's villains) | |
| Olsenbandens siste bedrifter | The Olsen Gang's last accomplishments | The Olsen Gang's last accomplishments | |
| Olsenbanden for full musikk | The Olsen Gang for full music | Totally Olsen Gang (title is a pun, as music plays a rather important part in the movie) | |
| Olsenbanden og Dynamitt-Harry på sporet | The Olsen Gang and Dynamite-Harry on the track | The Olsen Gang and Dynamite-Harry on the track ("track" here referring to a railroad track. Title is again a pun) | |
| Olsenbanden og Data-Harry sprenger verdensbanken | The Olsen Gang and Data-Harry blow up the World Bank | The Olsen Gang and Computer-Harry rob the World Bank | |
| Olsenbanden og Dynamitt-Harry mot nye høyder | The Olsen Gang and Dynamite-Harry towards new heights | The Olsen Gang and Dynamite-Harry towards new heights | |
| Olsenbanden gir seg aldri | The Olsen Gang never gives up | The Olsen Gang never gives up | |
| Olsenbandens aller siste kupp | The Olsen Gang's very last coup | The Olsen Gang's very last burglary | |
| ...men Olsenbanden var ikke død | ...but the Olsen Gang wasn't dead | ...but the Olsen Gang made their return | |
| Olsenbandens siste stikk | The Olsen Gang's last match | The Olsen Gang's last trick (as in cards) or last sting | |