| Name | Appearances | Note |
|---|---|---|
| Alex Mazur | 2 | Keyboard |
| Ali McGuirk | 1 | Vocals |
| Beau Sasser | 2 | Keyboard |
| Ben Hoadley | 3 | Bass |
| Brendan Tommaney | 4 | Percussion |
| Cotter Ellis | 1 | Drums |
| David Becker | 103 | bass |
| Donny Albrecht | 1 | Trumpet |
| Jack Vignone | 1 | Bass |
| Jason "Smiley" Engleson | 1 | Keyboard |
| Jeff Vetstein | 3 | guitar |
| Joe Marcinek | 1 | Guitar |
| Johnny Trama | 1 | guitar |
| Justin Lopes | 53 | Keyboards |
| Kevin Roper | 1 | Keyboard |
| Kiran Edwards | 1 | Keyboard |
| Kris Yunker | 40 | Keyboard |
| Matt Dolliver | 1 | saxophone |
| Max Chase | 3 | Keyboard |
| Michael Bafundo | 1 | Trumpet |
| Michael Butler | 104 | Vocals |
| Milt Reder | 1 | guitar |
| Nick Swift | 106 | Guitar |
| Parker McQueeney | 2 | Keyboard |
| Richard James | 1 | Keyboard |
| Tyler Brooks | 106 | Drums |