| Artist name | Roles | Recordings |
|---|---|---|
| Mother Mallard’s Portable Masterpiece Company | performer | Part 1, Part 2, Part 3, Part 4, Part 8 |
| David Borden | producer | Ceres Motion, Easter, Train |
| Artist name | Roles | Recordings |
|---|---|---|
| Exciter | producer | Blackwitch, Cry of the Banshee, Heavy Metal Maniac, Iron Dogs, Mistress of Evil, Rising of the Dead, Stand Up and Fight, The Holocaust, Under Attack |