| Person | Type | Job | Role(s) |
|---|---|---|---|
 AJ McLean | Cast | Actor | Self |
 Alicia Keys | Cast | Actress | Self |
 Billie Joe Armstrong | Cast | Actor | Self |
 Brian Littrell | Cast | Actor | Self |
 Dave Grohl | Cast | Actor | Self - Performer |
 Ellen DeGeneres | Cast | Actress | Self |
 Elton John | Cast | Actor | Self - Host |
 Howie Dorough | Cast | Actor | Self |
 Ken Jeong | Cast | Actor | Self |
 Kevin Richardson | Cast | Actor | Self |
 Mariah Carey | Cast | Actress | Self |
 Melissa McCarthy | Cast | Actress | Self |
 Nick Carter | Cast | Actor | Self |
 Ryan Seacrest | Cast | Actor | Self |
 Tim McGraw | Cast | Actor | Self |
 Ben Falcone | Cast | Actor | Self |
 Demi Lovato | Cast | Self | |
 Lady Gaga | Cast | Actress | Self |
 Sam Smith | Cast | Self | |
 Finneas O'Connell | Cast | Actor | Self |
 Shawn Mendes | Cast | Actor | Self |
 Lizzo | Cast | Actress | Self |
 Camila Cabello | Cast | Actress | Self |
 H.E.R. | Cast | Actress | Self |
 Billie Eilish | Cast | Actress | Self - Performer |
| Person | Type | Job | Role(s) |
