| Artist name | Roles | Recordings |
|---|---|---|
| Carl Westholm | theremin | Creatures |
| Mats Levén | vocal | Jennyfer |
| Phil Campbell (Welsh metal guitarist for Motörhead & Persian Risk) | electric guitar | Dark Side |
| Artist name | Roles | Recordings |
|---|---|---|
| Carl Westholm | theremin | Creatures |
| Mats Levén | vocal | Jennyfer |
| Phil Campbell (Welsh metal guitarist for Motörhead & Persian Risk) | electric guitar | Dark Side |