| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Al Schwartz | Crew | Production | Producer | 38 |
 Dick Clark | Crew | Production | Executive Producer | 38 |
 Glenn Weiss | Crew | Directing | Director | 11 |
Larry Klein | Crew | Production | Producer | 38 |
 AJ McLean | Cast | Actor | Self - Backstreet Boys - Musical Guest | 1 |
 Alanis Morissette | Cast | Actress | Self - Musical Guest | 1 |
 Billie Joe Armstrong | Cast | Actor | Self - Musical Guest as Green Day | 2 |
 Bobby Brown | Cast | Actor | Self [New Edition] | 1 |
 Brian Littrell | Cast | Actor | Self - Musical Guest | 1 |
 Carlos Santana | Cast | Actor | Self - Musical Guest | 1 |
 CeCe Winans | Cast | Actress | Self - Musical Guest | 1 |
 Chester Bennington | Cast | Actor | Self - Musical Guest as Linkin Park | 1 |
 Chris Daughtry | Cast | Actor | Self - Musical Guest as Daughtry | 1 |
 Christina Aguilera | Cast | Actress | Self - Musical Guest | 6 |
 Christina Milian | Cast | Actress | Self - Musical Guest | 1 |
 Céline Dion | Cast | Actress | Self - Musical Guest | 1 |
 Danny Wood | Cast | Actor | Self - New Kids on the Block | 2 |
 David Bryan | Cast | Actor | Self - Musical Guest | 1 |
 Diana Ross | Cast | Actress | Self - Musical Guest | 1 |
 Donnie McClurkin | Cast | Actor | Self - Musical Guest | 1 |
 Donnie Wahlberg | Cast | Actor | Self - New Kids on the Block | 2 |
 Drake | Cast | Actor | Self - Musical Guest | 1 |
 Enrique Iglesias | Cast | Actor | Self - Musical Guest | 2 |
 Fergie | Cast | Actress | Self - Musical Guest | 2 |
 Garth Brooks | Cast | Actor | Self - Musical Guest | 1 |
 Gavin Rossdale | Cast | Actor | Self - Musical Guest | 1 |
 Gladys Knight | Cast | Actress | Self - Musical Guest | 1 |
 Gwen Stefani | Cast | Actress | Self - Musical Guest as No Doubt | 1 |
 Howie Dorough | Cast | Actor | Self - Musical Guest | 1 |
 Jennifer Lopez | Cast | Actress | Self - Host / Musical Guest | 1 |
 Joey McIntyre | Cast | Actor | Self - New Kids on the Block | 2 |
Johnny Gill | Cast | Self [New Edition] | 1 | |
 Jon Bon Jovi | Cast | Actor | Self - Musical Guest | 1 |
 Jordan Knight | Cast | Actor | Self - New Kids on the Block | 2 |
 Joe Hahn | Cast | Actor | Self - Musical Guest as Linkin Park | 1 |
 Justin Timberlake | Cast | Actor | Self - Musical Guest | 1 |
 Kevin Richardson | Cast | Actor | Self - Backstreet Boys - Musical Guest | 1 |
 Kid Rock | Cast | Actor | Self - Musical Guest | 1 |
 Ludacris | Cast | Actor | Self - Musical Guest | 2 |
 Machine Gun Kelly | Cast | Actor | Self - Musical Guest | 1 |
 Marc Anthony | Cast | Actor | Self - Musical Guest | 1 |
 Mariah Carey | Cast | Actress | Self - Musical Guest | 1 |
 Mary J. Blige | Cast | Actress | Self - Musical Guest | 2 |
 Michael Bivins | Cast | Actor | Self [New Edition] | 1 |
 Mike Dirnt | Cast | Actor | Self - Musical Guest as Green Day | 2 |
 Mike Shinoda | Cast | Actor | Self - Musical Guest as Linkin Park | 1 |
 Missy Elliott | Cast | Actress | Self - Musical Guest | 1 |
 Nelly | Cast | Actor | Self - Musical Guest | 2 |
 Nick Carter | Cast | Actor | Self - Backstreet Boys - Musical Guest | 1 |
 Dave Farrell | Cast | Actor | Self - Musical Guest as Linkin Park | 1 |
 Pink | Cast | Actress | Self - Musical Guest | 4 |
 R. Kelly | Cast | Actor | Self - Musical Guest | 1 |
 Ralph E. Tresvant | Cast | Actor | Self [New Edition] | 1 |
 Richie Sambora | Cast | Actor | Self - Musical Guest | 1 |
 Rick Ross | Cast | Actor | Self - Musical Guest | 1 |
 Rob Bourdon | Cast | Actor | Self - Musical Guest as Linkin Park | 1 |
 Rozonda 'Chilli' Thomas | Cast | Actress | Self - Musical Guest as TLC | 1 |
 Shania Twain | Cast | Actress | Self - Musical Guest | 1 |
 Stevie Wonder | Cast | Actor | Self - Musical Guest | 2 |
 Sting | Cast | Actor | Self - Musical Guest | 1 |
 Swizz Beatz | Cast | Actor | Self - Musical Guest | 1 |
 Taraji P. Henson | Cast | Actress | Self - Host | 1 |
 Tionne 'T-Boz' Watkins | Cast | Actress | Self - Musical Guest as TLC | 1 |
 Toni Braxton | Cast | Actress | Self - Musical Guest | 1 |
 Tony Kanal | Cast | Actor | Self - Musical Guest as No Doubt | 1 |
 Tracee Ellis Ross | Cast | Actress | Self - Host | 2 |
 Tré Cool | Cast | Actor | Self - Musical Guest as Green Day | 2 |
 Usher | Cast | Actor | Self - Musical Guest | 2 |
 Wayne Brady | Cast | Actor | Self - Host | 1 |
 Wyclef Jean | Cast | Actor | Self - Musical Guest | 1 |
 Adam Levine | Cast | Actor | Self - Musical Guest as Maroon 5 | 2 |
 Carrie Underwood | Cast | Actress | Self | 5 |
 Chloe Bailey | Cast | Actress | Self | 1 |
 Chris Brown | Cast | Actor | Self - Musical Guest | 2 |
 Chris Martin | Cast | Actor | Self [Coldplay] | 2 |
 Ciara | Cast | Actress | Self - Musical Guest | 1 |
 David Guetta | Cast | Actor | Self - Musical Guest | 1 |
 Demi Lovato | Cast | Self - Presenter | 1 | |
 Guy Berryman | Cast | Actor | Self [Coldplay] | 2 |
 John Legend | Cast | Actor | Self - Musical Guest | 1 |
 Jon Buckland | Cast | Actor | Self [Coldplay] | 2 |
 Kelly Clarkson | Cast | Actress | Self - Musical Guest | 3 |
 Lil' Jon | Cast | Actor | Self - Musical Guest | 1 |
 Lil Wayne | Cast | Actor | Self - Musical Guest | 1 |
 Miley Cyrus | Cast | Actress | Self - Musical Guest | 2 |
 Ne-Yo | Cast | Actor | Self - Musical Guest | 2 |
 Pitbull | Cast | Actor | Self - Musical Guest | 3 |
 Rihanna | Cast | Actress | Self - Musical Guest | 2 |
Selena Gomez | Cast | Actress | Self - Musical Guest | 4 |
 Taboo | Cast | Actor | Self - Musical Guest | 1 |
 Tico Torres | Cast | Actor | Self - Musical Guest | 1 |
 Tom Dumont | Cast | Actor | Self - Musical Guest as No Doubt | 1 |
 Will Champion | Cast | Actor | Self [Coldplay] | 2 |
 Will.i.am | Cast | Actor | Self - Musical Guest | 2 |
 Becky G | Cast | Actress | Self - Musical Guest | 1 |
 Hailee Steinfeld | Cast | Actress | Self - Musical Guest | 1 |
 Joe Jonas | Cast | Actor | Self - Musical Guest as Jonas Brothers | 1 |
 Katy Perry | Cast | Actress | Self - Musical Guest | 4 |
 Kevin Jonas | Cast | Actor | Self - Musical Guest as Jonas Brothers | 1 |
 Lady Gaga | Cast | Actress | Self - Musical Guest | 3 |
 Ledisi | Cast | Actress | Self - Musical Guest | 1 |
 Luke Bryan | Cast | Actor | Self - Musical Guest | 2 |
 Nathan Sykes | Cast | Actor | Self - Musical Guest as The Wanted | 1 |
 Lil Mama | Cast | Actress | Self - Musical Guest | 1 |
 Nick Jonas | Cast | Actor | Self - Musical Guest | 2 |
 Ryan Tedder | Cast | Actor | Self - Musical Guest as OneRepublic | 1 |
 Sam Smith | Cast | Self - Musical Guest | 1 | |
 Siva Kaneswaran | Cast | Actor | Self - Musical Guest as The Wanted | 1 |
 Skylar Grey | Cast | Actress | Self - Musical Guest | 2 |
 Taylor Swift | Cast | Actress | Self - Musical Guest | 5 |
 Ariana Grande | Cast | Actress | Self - Musical Guest | 4 |
 Benny Blanco | Cast | Actor | Self - Musical Guest | 1 |
 Bruno Mars | Cast | Actor | Self - Musical Guest | 1 |
 FINNEAS | Cast | Actor | Self - Musical Guest | 1 |
 Harry Styles | Cast | Actor | Self - Musical Guest as One Direction | 3 |
 Jay McGuiness | Cast | Actor | Self - Musical Guest as The Wanted | 1 |
 Jay Pharoah | Cast | Actor | Self - Host | 1 |
 Jessie J | Cast | Actress | Self - Musical Guest | 1 |
 Justin Bieber | Cast | Actor | Self - Musical Guest | 6 |
 Kesha | Cast | Actress | Self - Musical Guest | 4 |
 Liam Payne | Cast | Actor | Self - Musical Guest as One Direction | 3 |
 Louis Tomlinson | Cast | Actor | Self - Musical Guest as One Direction | 3 |
 Max George | Cast | Actor | Self - Musical Guest as The Wanted | 1 |
 Niall Horan | Cast | Actor | Self - Musical Guest as One Direction | 3 |
 Nicki Minaj | Cast | Actress | Self - Musical Guest | 4 |
 Ross Lynch | Cast | Actor | Self - Musical Guest as R5 | 1 |
 Sebastian Ingrosso | Cast | Actor | Self - Musical Guest | 1 |
 Steve Angello | Cast | Actor | Self - Musical Guest | 1 |
 Tom Parker | Cast | Actor | Self - Musical Guest as The Wanted | 1 |
 Zayn Malik | Cast | Actor | Self - Musical Guest as One Direction | 2 |
 A$AP Rocky | Cast | Actor | Self - Musical Guest | 1 |
 Carly Rae Jepsen | Cast | Actress | Self - Musical Guest | 1 |
 Dove Cameron | Cast | Actress | Self - Musical Guest | 1 |
 Gigi Hadid | Cast | Actress | Self - Host | 1 |
 Iggy Azalea | Cast | Actress | Self - Musical Guest | 1 |
 Macklemore | Cast | Actor | Self - Musical Guest | 1 |
 Psy | Cast | Actor | Self - Musical Guest | 1 |
 Anitta | Cast | Actress | Self - Musical Guest | 1 |
 Avi Kaplan | Cast | Actor | Self - Musical Guest as Pentatonix | 1 |
 Charli xcx | Cast | Actress | Self - Musical Guest | 1 |
 Kevin Olusola | Cast | Actor | Self - Musical Guest as Pentatonix | 1 |
 Lorde | Cast | Actress | Self - Musical Guest | 1 |
 Mitch Grassi | Cast | Actor | Self - Musical Guest as Pentatonix | 1 |
 Scott Hoying | Cast | Actor | Self - Musical Guest as Pentatonix | 1 |
 Shawn Mendes | Cast | Actor | Self - Musical Guest | 6 |
 YG | Cast | Actor | Self - Musical Guest | 1 |
 Anderson .Paak | Cast | Actor | Self [Silk Sonic] | 1 |
 Halsey | Cast | Actress | Self - Musical Guest | 3 |
 Olivia Rodrigo | Cast | Actress | Self | 1 |
 j-hope | Cast | Actor | Self [BTS] | 3 |
 Jung Kook | Cast | Actor | Self [BTS] | 3 |
 Jimin | Cast | Actor | Self [BTS] | 3 |
 RM | Cast | Actor | Self [BTS] | 3 |
 Post Malone | Cast | Actor | Self - Musical Guest | 2 |
 Jin | Cast | Actor | Self [BTS] | 3 |
 V | Cast | Actor | Self [BTS] | 3 |
 SUGA | Cast | Actor | Self [BTS] | 3 |
 Apl.de.Ap | Cast | Actor | Self - Musical Guest | 1 |
 DJ Khaled | Cast | Actor | Self - Musical Guest | 1 |
 MC Hammer | Cast | Actor | Self - Musical Guest | 1 |
 Bebe Rexha | Cast | Actress | Self - Musical Guest | 2 |
 Meghan Trainor | Cast | Actress | Self - Musical Guest | 1 |
 The Weeknd | Cast | Actor | Self - Musical Guest | 4 |
 Leon Bridges | Cast | Self - Musical Guest | 1 | |
 Diplo | Cast | Actor | Self | 1 |
 Adrian Young | Cast | Actor | Self - Musical Guest as No Doubt | 1 |
 Brad Delson | Cast | Actor | Self - Musical Guest as Linkin Park | 1 |
 Kirstin Maldonado | Cast | Actress | Self - Musical Guest as Pentatonix | 1 |
 Thomas Rhett | Cast | Actor | Self - Musical Guest | 1 |
 Lizzo | Cast | Actress | Self - Musical Guest | 1 |
 Darius Rucker | Cast | Actor | Self - Musical Guest | 1 |
 Ronnie DeVoe | Cast | Actor | Self [New Edition] | 1 |
 Ricky Bell | Cast | Actor | Self [New Edition] | 1 |
 Kendrick Lamar | Cast | Actor | Self - Musical Guest | 2 |
Shay Mooney | Cast | Self - Musical Guest as Dan + Shay | 1 | |
Dan Smyers | Cast | Actor | Self - Musical Guest as Dan + Shay | 1 |
 Jason Aldean | Cast | Actor | Self | 1 |
 Tyler, The Creator | Cast | Actor | Self | 1 |
 Kane Brown | Cast | Actor | Self | 1 |
 Dan Reynolds | Cast | Actor | Self - Musical Guest as Imagine Dragons | 4 |
 Ben McKee | Cast | Actor | Self - Musical Guest as Imagine Dragons | 4 |
 Wayne Sermon | Cast | Actor | Self - Musical Guest as Imagine Dragons | 4 |
 Daniel Platzman | Cast | Actor | Self - Musical Guest as Imagine Dragons | 4 |
 Cardi B | Cast | Actress | Self - Musical Guest | 2 |
 Travis Barker | Cast | Actor | Self - Musical Guest | 2 |
 Axwell | Cast | Actor | Self - Musical Guest | 1 |
 Alesso | Cast | Actor | Self - Musical Guest | 1 |
 Ty Dolla Sign | Cast | Actor | Self - Musical Guest | 1 |
 Zedd | Cast | Actor | Self - Musical Guest | 2 |
 Alessia Cara | Cast | Actress | Self - Musical Guest | 2 |
 Camila Cabello | Cast | Actress | Self - Musical Guest as Fifth Harmony | 1 |
 Ella Henderson | Cast | Actress | Self - Musical Guest | 1 |
 Mustard | Cast | Actor | Self - Musical Guest | 1 |
 J Balvin | Cast | Actor | Self - Musical Guest | 1 |
 Dua Lipa | Cast | Actress | Self - Musical Guest | 3 |
 Khalid | Cast | Actor | Self - Musical Guest | 2 |
 Future | Cast | Actor | Self - Musical Guest | 1 |
 Alex Pall | Cast | Actor | Self - Musical Guest as The Chainsmokers | 1 |
 Drew Taggart | Cast | Actor | Self - Musical Guest as The Chainsmokers | 1 |
 Damiano David | Cast | Actor | Self [Måneskin] | 1 |
 Victoria De Angelis | Cast | Actress | Self [Måneskin] | 1 |
 Thomas Raggi | Cast | Actor | Self [Måneskin] | 1 |
 Ethan Torchio | Cast | Actor | Self [Måneskin] | 1 |
Brent Kutzle | Cast | Actor | Self - Musical Guest as OneRepublic | 1 |
Eddie Fisher | Cast | Actor | Self - Musical Guest as OneRepublic | 1 |
Zach Filkins | Cast | Actor | Self - Musical Guest as OneRepublic | 1 |
Drew Brown | Cast | Actor | Self - Musical Guest as OneRepublic | 1 |
 Maluma | Cast | Actor | Self - Musical Guest | 1 |
 Calum Hood | Cast | Actor | Self - Musical Guest as 5 Seconds of Summer | 2 |
 Michael Clifford | Cast | Actor | Self - Musical Guest as 5 Seconds of Summer | 2 |
 Ashton Irwin | Cast | Actor | Self - Musical Guest as 5 Seconds of Summer | 2 |
 Luke Hemmings | Cast | Actor | Self - Musical Guest as 5 Seconds of Summer | 2 |
 Tyler Joseph | Cast | Actor | Self - Musical Guest as Twenty One Pilots | 2 |
 Josh Dun | Cast | Actor | Self - Musical Guest as Twenty One Pilots | 2 |
 Megan Thee Stallion | Cast | Actress | Self - Musical Guest | 1 |
 Billie Eilish | Cast | Actress | Self - Musical Guest | 2 |
 Normani | Cast | Actress | Self - Musical Guest as Fifth Harmony | 1 |
 Lewis Capaldi | Cast | Actor | Self - Musical Guest | 1 |
 Ally Brooke | Cast | Self - Musical Guest as Fifth Harmony | 1 | |
 Charlie Puth | Cast | Actor | Self - Musical Guest | 2 |
 Brendon Urie | Cast | Actor | Self - Musical Guest as Panic! at the Disco | 1 |
 Yola | Cast | Actress | Self - Musical Guest | 1 |
 Bad Bunny | Cast | Actor | Self | 2 |
 Jonathan Knight | Cast | Actor | Self - New Kids on the Block | 2 |
Brian Willett | Cast | Self - Musical Guest as OneRepublic | 1 | |
Tainy | Cast | Actor | Self | 1 |
 Iann Dior | Cast | Actor | Self - Musical Guest | 1 |
 Karen Fairchild | Cast | Actress | Self - Musical Guest | 1 |
 Doja Cat | Cast | Actress | Self - Musical Guest | 1 |
 Mickey Guyton | Cast | Actress | Self - Musical Guest | 1 |
24kGoldn | Cast | Self - Musical Guest | 1 | |
Nicholas Petricca | Cast | Self - Musical Guest as WALK THE MOON | 1 | |
 Lauren Jauregui | Cast | Actress | Self - Musical Guest as Fifth Harmony | 1 |
 Dinah Jane | Cast | Actress | Self - Musical Guest as Fifth Harmony | 1 |
 Lil Baby | Cast | Actor | Self - Musical Guest | 1 |
 Givēon | Cast | Actor | Self | 1 |
 Walker Hayes | Cast | Actor | Self | 1 |
Zoe Wees | Cast | Actress | Self | 1 |
 DJ Snake | Cast | Self - Musical Guest | 1 | |
 Marshmello | Cast | Actor | Self - Musical Guest | 1 |
| Person | Type | Job | Role(s) | Episodes |
