The film is based on a series of immensely popular Swedish children's books, about the boy Bert, who is just hitting puberty and having the usual problems with it. But that's where the usual ends abruptly.
| Directing | Tomas Alfredson | Director |
| Sound | Mats Bylund | Sound Editor |
| Sound | Bernt Eklund | Sound |
| Sound | Klas Engström | Sound Editor |
| Sound | Gunnar Landström | Sound |
| Sound | Lasse Ulander | Sound Editor |
| Sound | Bengt Wallman | Sound |
| Costume & Make-Up | Gunilla Kohlin | Makeup Artist |
| Costume & Make-Up | Mona Tellström-Berg | Makeup Artist |
| Costume & Make-Up | Kicki Ilander | Costume Design |
| Art | Rasmus Rasmusson | Set Decoration |
| Art | Johanna Egnell | Art Direction |
| Art | Björn Nordenhagen | Production Design |
| Production | Renate Fryklund | Casting |
| Production | Ann-Christine Rolén | Casting |
| Editing | Louise Brattberg | Editor |
| Camera | Leif Benjour | Director of Photography |
| Sound | Michael B. Tretow | Original Music Composer |
| Production | Stefan Lundberg | Executive Producer |
| Production | Johan Mardell | Producer |
| Writing | Michael Hjorth | Writer |
| Writing | Anders Jacobsson | Writer |
| Writing | Sören Olsson | Writer |
| Writing | Tomas Tivemark | Writer |