| Name | Character | Episodes |
|---|---|---|
| Katy Perry | Self - Judge | 131 |
| Ryan Seacrest | Self - Host | 131 |
| Lionel Richie | Self - Judge | 131 |
| Luke Bryan | Self - Judge | 131 |
| Adam Lambert | Self | 2 |
| Cynthia Erivo | Self | 1 |
| Rebel Wilson | Self | 1 |
| Rivers Cuomo | Self | 1 |
| Jewel | Self | 1 |
| Joss Stone | Self | 1 |
| Bebe Rexha | Self - Special Guest | 1 |
| Tori Kelly | Self | 1 |
| Elle King | Self | 1 |
| Josh Groban | Self | 1 |
| Katharine McPhee | Self | 1 |
| Carrie Underwood | Self | 1 |
| Lea Michele | Self - Special Guest | 1 |
| Lea Michele | Self | 1 |
| Jason Mraz | Self | 1 |
| Andra Day | Self | 1 |
| Brian McKnight | Self | 1 |
| Julia Michaels | Self | 1 |
| Ben Harper | Self | 1 |
| Colbie Caillat | Self - Special Guest | 1 |
| Nick Merico | Self | 1 |
| Brian Bell | Self | 1 |
| Shaggy | Self | 1 |
| Kane Brown | Self | 1 |
| Montell Jordan | Self | 1 |
| Gabby Barrett | Self | 1 |
| Lukas Graham Forchhammer | Self | 1 |
| Jimmie Allen | Self | 1 |
| Daddy Yankee | Self | 1 |
| Ryan Tedder | Self | 1 |
| Scott Shriner | Self | 1 |
| VoKillz | Self | 1 |