| Musician | Appearances |
|---|---|
| Mike Chlasciak | 5 albums |
| Rob Halford | 5 albums |
| Bobby Jarzombek | 5 albums |
| Roy Z | 4 albums |
| Patrick Lachman | 3 albums |
| Ray Riendeau | 3 albums |
| Mike Davis | 2 albums |
| Bruce Dickinson | 2 albums |
| Ed Roth | 2 albums |
| Pete Parada | 1 album |
| Rudolf Schenker | 1 album |