Name	Known for
Dermot O'Leary Self - Presenter Self - Presenter See fewer	The X Factor UK (2004)
Simon Cowell Self - Judge Self - Judge See fewer	Scary Movie 3 (2003)
Cheryl Self - Judge (as Cheryl Cole) Self - Judge (as Cheryl Cole) See fewer	What to Expect When You're Expecting (2012)
Dannii Minogue Self - Judge Self - Judge See fewer	Home and Away (1988)
Louis Walsh Self - Judge Self - Judge See fewer	Spin the Bottle (2003)
The Black Eyed Peas Themselves - Special Guest Themselves - Special Guest See fewer	G.I. Joe: The Rise of Cobra (2009)
Dianna Agron Self - Guest / Quinn Fabray (as The Cast of Glee) Self - Guest / Quinn Fabray (as The Cast of Glee) See fewer	The Family (I) (2013)
Jane Lynch Sue Sylvester (as The Cast of Glee) Sue Sylvester (as The Cast of Glee) See fewer	Wreck-It Ralph (2012)
Kevin McHale Self - Guest / Artie Abrams (as The Cast of Glee) Self - Guest / Artie Abrams (as The Cast of Glee) See fewer	Glee (2009)
Lea Michele Self - Guest / Rachel Berry (as The Cast of Glee) Self - Guest / Rachel Berry (as The Cast of Glee) See fewer	Glee (2009)
Cory Monteith Self - Guest / Finn Hudson (as The Cast of Glee) Self - Guest / Finn Hudson (as The Cast of Glee) See fewer	Glee (2009)
Heather Elizabeth Morris Self - Guest / Brittany S. Pierce (as The Cast of Glee) Self - Guest / Brittany S. Pierce (as The Cast of Glee) See fewer	Glee (2009)
Matthew Morrison Will Schuester (as The Cast of Glee) Will Schuester (as The Cast of Glee) See fewer	Glee (2009)
Chord Overstreet Self - Guest / Sam Evans (as The Cast of Glee) Self - Guest / Sam Evans (as The Cast of Glee) See fewer	Glee (2009)
Amber Riley Self - Guest / Mercedes Jones (as The Cast of Glee) Self - Guest / Mercedes Jones (as The Cast of Glee) See fewer	Glee (2009)
Naya Rivera Self - Guest / Santana Lopez (as The Cast of Glee) Self - Guest / Santana Lopez (as The Cast of Glee) See fewer	Glee (2009)
Mark Salling Self - Guest / Puck (as The Cast of Glee) Self - Guest / Puck (as The Cast of Glee) See fewer	Glee (2009)
Harry Shum Jr. Self - Guest / Mike Chang (as The Cast of Glee) Self - Guest / Mike Chang (as The Cast of Glee) See fewer	Everything Everywhere All at Once (2022)
Jenna Ushkowitz Self - Guest / Tina Cohen-Chang (as The Cast of Glee) Self - Guest / Tina Cohen-Chang (as The Cast of Glee) See fewer	Glee (2009)
Alexandra Burke Self - Special Guest Self - Special Guest See fewer	Pretty Red Dress (2022)
Briony Albert Self - Lead Dancer Self - Lead Dancer See fewer	Children in Need (2008)
Mary Byrne Self - Contestant Self - Contestant See fewer	Never Mind the Buzzcocks (1996)
Matt Cardle Self - Contestant Self - Contestant See fewer	Fast Girls (2012)
Rebecca Ferguson Self - Contestant Self - Contestant See fewer	Everything Is Love (2014)
Cher Lloyd Self - Contestant Self - Contestant See fewer	Identity Thief (2013)
Killian Lyrik Self (Choir) Self (Choir) See fewer	Don't Stop Believing (2010)
One Direction Themselves - Contestants Themselves - Contestants See fewer	One Direction: What Makes You Beautiful (2011)
Harry Styles Self - Contestant (as One Direction) Self - Contestant (as One Direction) See fewer	Dunkirk (2017)
Desi Valentine Backing vocalist Backing vocalist See fewer	The Search for John Gissing (2001)