| Gareth | Not part of the drama but appears now and again to explain new language |
| Jaci | A Welsh learner herself who is romantically involved with DEWI. Works in the reception at Swalec. |
| Dewi | Works in the local CANOLFAN HAMDDEN - leisure centre |
| Nia | JACI's flat-mate and mentor. Works at YSGOL FEITHRIN Bryn Coch - Bryn Coch nursery school |
| Malcolm | Works on the shop floor of Homeworld |
| Ann | MALCOLM's wife who works at the bank |
| Lisa | The manager's secretary at Homeworld |
| Delyth/Aled | MALCOLM and ANN's teenage children - both cause problems |
| Megan | Ann's mother |
| Rhys | The local P.C. |
| Mici | Cleans the windows. Involved in the odd dodgy deal |
| J.P. | Ann's boss at the bank |
| Roger | Roger |