- Stephen 'tWitch' Boss - Self
- Matthew Morrison - Self
- JoJo Siwa - Self - Judge
- Leah Remini - Self
- Maksim Chmerkovskiy - Self
- Allison Holker - Self - Judge
- Mary Murphy - Self - Judge
- Adam Shankman - Self - Judge
- Paula Abdul - Self - Judge
- Mika - Self - Musical Guest
- Rihanna - Self - Performer
- Jeanine Mason - Herself
- Alan Bersten - Himself
- Lev Cameron - Self
- Alex Wong - Himself - Contestant
- Maddie Ziegler - Self - Judge
- Courtney Galiano - Herself
- Drew Barrymore - (archive footage)
- Roger L. Jackson - (archive footage)
- Janette Manrara - Self
- Janette Manrara - Self - All-Star
- Tate McRae - Self
- Brian Robinson
- Michelle Basterrechea
- Nigel Lythgoe
- Allen Shapiro
- Paula Abdul
- Tucker Smith
- Arvo Pärt
Cat Deeley interpreta a Self - Host en la serie.
Stephen 'tWitch' Boss interpreta a Self en la serie.
Matthew Morrison interpreta a Self en la serie.
JoJo Siwa hace el papel de Self - Judge.
Maksim Chmerkovskiy interpreta a Self en la serie.
Allison Holker hace el papel de Self - Judge.
Capítulo disponible en las siguientes plataformas:
