| Name | Character | Episodes |
|---|---|---|
| Ralf Wolter | Opa Grünwald | 6 |
| Niels-Bruno Schmidt | Dennis Grünwald | 6 |
| Anne-Sophie Briest | Britta | 6 |
| Dieter Mann | Lupinsky | 6 |
| Alexander Beyer | Ingo Nobis | 6 |
| Dennenesch Zoudé | Kabea Sadoga | 6 |
| Elisabeth Volkmann | Marina Perlmutter | 6 |
| Mario Irrek | Kurt | 6 |