| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Charlotte Schwab | Police Councillor Anna Engelhardt | SIG-Sauer P228 | Ep. "Stadt in Angst" |
| Christopher Domansky | A criminal | AKM | Ep. "Unter Feinden" |
| Dietmar Huhn | Police Officer Horst 'Hotte' Herzberger | SIG-Sauer P225 | Ep. "Leben und leben lassen" & "Exodus" |
| Dirk Borchardt | Jäger | Beretta 92FS Inox | Ep. "Unter Feinden" |
| Gottfried Vollmer | Police Officer Dieter Bonrath | SIG-Sauer P225 | Ep. "Exodus" |
| Guntbert Warns | Horst Remberg | Heckler & Koch USP | Ep. "Stadt in Angst" |
| Hans Kremer | Kreutz | Walther PPK | Ep. "Stadt in Angst" |
| Lutz Herkenrath | Eike Bredow | Heckler & Koch USP | Ep. "Totalverlust" |
| Oliver Stritzel | Dr. Peter Hoch | Heckler & Koch USP | Ep. "Totalverlust" |