Name	Known for
Mario Lopez Self - Host Self - Host See fewer	Saved by the Bell (1989)
Simon Cowell Self - Judge Self - Judge See fewer	Scary Movie 3 (2003)
Demi Lovato Self - Judge Self - Judge See fewer	Camp Rock (2008)
Kelly Rowland Self - Judge Self - Judge See fewer	Freddy vs. Jason (2003)
Paulina Rubio Self - Judge Self - Judge See fewer	S.W.A.T. (2003)
Josh Levi Self Self See fewer	Turning Red (2022)
Alex & Sierra Themselves - Contestants Themselves - Contestants See fewer	The X Factor (2011)
Mary J. Blige Self - Musical Guest Self - Musical Guest See fewer	Mudbound (2017)
Jeff Gutt Self - Contestant Self - Contestant See fewer	13th Sign (2011)
Laura Jane Jones Self - backup singer for Lea Michelle Self - backup singer for Lea Michelle See fewer	Sandy Wexler (2017)
Alex Kinsey Self Self See fewer	JBACH: Taste (2019)
Leona Lewis Self - Musical Guest Self - Musical Guest See fewer	Avatar (2009)
Lea Michele Self - Musical Guest Self - Musical Guest See fewer	Glee (2009)
Carlito Olivero Self - Contestant Self - Contestant See fewer	Escape Room: Tournament of Champions (2021)
One Direction Themselves - Musical Guests Themselves - Musical Guests See fewer	One Direction: What Makes You Beautiful (2011)
Pitbull Self - Musical Guest Self - Musical Guest See fewer	Epic (2013)
Timmy Thames Self - Contestant Self - Contestant See fewer	Who's Logan & Rivr Thames: Call for a Good Time (2023)
Kesha Self - Musical Guest (archive footage) (uncredited) Self - Musical Guest (archive footage) (uncredited) See fewer	On the Basis of Sex (2018)