Full cast of The X Factor

Louis Walsh

Self - Judge

367 episodes

Simon Cowell

Self - Judge

329 episodes

Dermot O'Leary

Self - Presenter

312 episodes

Sharon Osbourne

Self - Judge

203 episodes

Nicole Scherzinger

Self - Judge

123 episodes

Dannii Minogue

Self - Judge

118 episodes

Gary Barlow

Self - Judge

94 episodes

Kate Thornton

Self - Presenter

83 episodes

Kelly Rowland

Self - Judge

31 episodes

Robbie Williams

Self - Judge / Self - Special Guest / Self

30 episodes

Caroline Flack

Self - Presenter

28 episodes

Olly Murs

Self - Presenter

28 episodes

Nick Grimshaw

Self - Judge

28 episodes

Rita Ora

Self - Judge

28 episodes

Ayda Field

Self - Judge

28 episodes

Louis Tomlinson

Self - Judge

28 episodes

Misha Bryan

Self - Contestant

17 episodes

Leigh-Anne Pinnock

15 episodes

Perrie Edwards

15 episodes

Jesy Nelson

15 episodes

Jade Thirlwall

15 episodes

Dalton Harris

Self - Contestant

10 episodes

Brendan Murray

Self - Contestant

8 episodes

Brian Friedman

Self - Creative Director

5 episodes

Alexandra Burke

Self

5 episodes

Jeff Brazier

Self - OB Presenter

5 episodes

Rhydian

Self - Contestant / Self - Special Guest

5 episodes

Daniel Pearce

5 episodes

Michael Underwood

Self - OB Presenter

3 episodes

Niki Evans

Self - Contestant

3 episodes

Myleene Klass

Self - OB Presenter

3 episodes

Harry Styles

Self - Contestant

3 episodes

Leona Lewis

Self - Special Guest / Self - Contestant

3 episodes

Michael Bublé

Self - Special Guest

3 episodes

Luke Johnson

Self - Dancer

3 episodes

Céline Dion

Self - Special Guest

2 episodes

Rod Stewart

Self - Special Guest

2 episodes

Lionel Richie

Self - Special Guest

2 episodes

Mariah Carey

Self - Special Guest

2 episodes

Barry Manilow

Self - Special Guest

2 episodes

Tony Bennett

Self - Special Guest

2 episodes

Will Young

Self - Special Guest

2 episodes

Kylie Minogue

Self - Special Guest

2 episodes

Beyoncé

Self

2 episodes

Zayn Malik

Self - Contestant

2 episodes

Liam Payne

Self - Contestant

2 episodes

Michelle Thorne

Self

2 episodes

Julio Iglesias

Self - Special Guest

1 episode

Ray Quinn

Self - Contestant

1 episode

Kian Egan

Self - Judges' Expert

1 episode

Ben Mills

Self - Contestant

1 episode

Leon Jackson

Self - Auditionee

1 episode

Britney Spears

Self - Special Guest

1 episode

Gloria Estefan

Self - Performer

1 episode

Jason Donovan

Self - Special Guest

1 episode

Katherine Jenkins

Self - Special Guest

1 episode

Usher

Self - Special Guest

1 episode

Katy Perry

Self - Special Guest

1 episode

Ronan Keating

Self - Guest Judge

1 episode

Mary Byrne

Self - Contestant

1 episode

Niall Horan

Self - Contestant

1 episode

Shayne Ward

Self

1 episode

Andy Abraham

Self

1 episode

Carl Pemberton

Self

1 episode

Andy Pemberton

Self

1 episode

Brenda Edwards

Self

1 episode

Chico Slimani

Self

1 episode

Sinead Conway

Self

1 episode

Sharon Conway

Self

1 episode

Marie Conway

Self

1 episode

Laura Conway

Self

1 episode

Nicholas Dorsett

Self

1 episode

Maria Lawson

Self

1 episode

Chenai Zinyuku

Self

1 episode

Phillip Magee

Self

1 episode

Florence Welch

Self - Musical Guest

1 episode