| Name | Character | Episodes |
|---|---|---|
| Jane Krakowski | Self - Host | 54 |
| Randy Jackson | Self - Band Leader | 54 |
| Craig Ferguson | Self - Contestant | 2 |
| Rachael Harris | Self - Contestant | 1 |
| Mel B | Self - Contestant | 1 |
| Italia Ricci | Self - Contestant | 1 |
| Jamie Chung | Self - Contestant | 1 |
| Jack McBrayer | Self - Contestant | 1 |
| Robbie Amell | Self - Contestant | 1 |
| Elizabeth Berkley | Self - Contestant | 1 |
| Kat Graham | Self - Contestant | 1 |
| Nicole Byer | Self - Contestant | 1 |
| Lisa Loeb | Self - Contestant | 1 |
| Nicole Sullivan | Self - Contestant | 1 |
| Vanessa Williams | Self - Contestant | 1 |
| Rumer Willis | Self - Contestant | 1 |
| Wendi McLendon-Covey | Self - Contestant | 1 |
| Tisha Campbell | Self - Contestant | 1 |
| Chris Parnell | Self - Contestant | 1 |
| Ian Ziering | Self - Contestant | 1 |
| Jesse Metcalfe | Self - Contestant | 1 |
| Kevin Nealon | Self - Contestant | 1 |
| Chris Irvine | Self - Contestant | 1 |
| Jesse McCartney | Self - Contestant | 1 |
| Kym Whitley | Self - Contestant | 1 |
| Andy Richter | Self - Contestant | 1 |
| Kate Flannery | Self - Contestant | 1 |
| Melissa Peterman | Self - Contestant | 1 |
| JoJo Siwa | Self - Contestant | 1 |
| Debbie Gibson | Self - Contestant | 1 |
| Jennie Garth | Self - Contestant | 1 |
| Corbin Bleu | Self - Contestant | 1 |
| Jana Kramer | Self - Contestant | 1 |
| Darren Criss | Self - Contestant | 1 |
| Kelly Osbourne | Self - Contestant | 1 |
| Steve-O | Self - Contestant | 1 |
| Tig Notaro | Self - Contestant | 1 |
| Kim Fields | Self - Contestant | 1 |
| Amanda Seales | Self - Contestant | 1 |
| Bryan Greenberg | Self - Contestant | 1 |
| Vivica A. Fox | Self - Contestant | 1 |
| Rachael Leigh Cook | Self - Contestant | 1 |
| Jodie Sweetin | Self - Contestant | 1 |
| Jay Pharoah | Self - Contestant | 1 |
| Michael Ian Black | Self - Contestant | 1 |
| John Salley | Self - Contestant | 1 |
| JoJo | Self - Contestant | 1 |
| Cameron Mathison | Self - Contestant | 1 |
| Amber Riley | Self - Contestant | 1 |
| Frankie Muniz | Self - Contestant | 1 |
| Holly Robinson Peete | Self - Contestant | 1 |
| Erika Girardi | Self - Contestant | 1 |
| Ross Mathews | Self - Contestant | 1 |
| Cynthia Bailey | Self - Contestant | 1 |
| Mario Cantone | Self - Contestant | 1 |
| Melanie C | Self - Contestant | 1 |
| Deon Cole | Self - Contestant | 1 |
| Belinda Carlisle | Self - Contestant | 1 |
| Howie Dorough | Self - Contestant | 1 |
| Samantha Bee | Self - Contestant | 1 |
| Ravi Patel | Self - Contestant | 1 |
| Jordin Sparks | Self - Contestant | 1 |
| Michelle Williams | Self - Contestant | 1 |
| Jeff Ross | Self - Contestant | 1 |
| Loni Love | Self - Contestant | 1 |
| Carson Kressley | Self - Contestant | 1 |
| Clay Aiken | Self - Contestant | 1 |
| Teddi Mellencamp Arroyave | Self - Contestant | 1 |
| Tyron Woodley | Self - Contestant | 1 |
| Vernon Davis | Self - Contestant | 1 |
| Laurie Hernandez | Self - Contestant | 1 |
| Johnny Weir | Self - Contestant | 1 |
| Teresa Giudice | Self - Contestant | 1 |
| Ally Brooke | Self - Contestant | 1 |
| Shaggy | Self - Contestant | 1 |
| Heather McDonald | Self - Contestant | 1 |
| Tiki Barber | Self - Contestant | 1 |
| Todrick Hall | Self - Contestant | 1 |
| Taylor Hanson | Self - Contestant | 1 |
| Drew Lachey | Self - Contestant | 1 |
| Michael Kosta | Self - Contestant | 1 |
| Megan Hilty | Self - Contestant | 1 |
| Tituss Burgess | Self - Contestant | 1 |
| Caroline Rhea | Self - Contestant | 1 |