罗南·基廷

Ronan Keating

饰：Himself - Judge

梅兰妮·布朗

Melanie Brown

饰：Herself - Judge

娜塔莉·巴辛思韦特

Natalie Bassingthwaighte

饰：Herself - Judge

亚历山德拉·伯克

Alexandra Burke

饰：Herself - The X Factor UK 2008 Winner

Rebecca Murphy

饰：Herself

Stefan Gordy

饰：Himself - Judge

卡玛尔

Kamahl

饰：Himself - Audience Member

卡莎

Kesha

饰：Herself - Guest Judge

LMFAO

饰：Themselves - Special Guest

Luke Jacobz

饰：Himself - Host

杰西卡·麦尔白

Jessica Mauboy

饰：Herself - Performer

莎伦·奥斯本

Sharon Osbourne

饰：Herself

泽恩·马里克

Zain Javadd Malik

饰：Himself - One Direction

Darren Hayes

饰：Himself - Guest Judge

David Koch

饰：Himself - Sunrise

Ricki-Lee Coulter

饰：Herself - Audience Member

凯特·塞贝拉诺

Kate Ceberano

饰：Herself - Judge

贾斯汀·比伯

Justin Bieber

饰：Himself - Performer

西蒙·考威尔

Simon Cowell

饰：Himself - Creator & The X Factor Judge

Vince Harder

饰：Himself

伊基·阿塞莉娅

Iggy Azalea

饰：Herself - Judge

哈里·斯泰尔斯

Harry Edward Styles

饰：Himself

Melissa Doyle

饰：Herself - Sunrise

Erana Clark

饰：Herself - Vocal Coach

Chris Cayzer

饰：Himself - Contestant

埃利·古尔丁

Ellie Goulding

饰：Herself - Performer

斯坦·沃克

Stan Walker

饰：Himself

丹尼尔·麦克弗森

Daniel MacPherson

饰：Himself - Host

Ashley Evans

Ashley Evans

饰：Himself - Choreographer

艾丽西亚·凯斯

Alicia Keys

饰：Herself - Guest Judge

沙恩·林奇

Shane Lynch

饰：Himself

霍齐尔

Hozier

饰：Himself - Performer

T.J. Tauvao

饰：Himself

The Squared Division

饰：Themselves - Choreographer

苏珊大妈

Susan Boyle

饰：Herself - Special Guest

瑞塔·奥拉

Rita Ora

饰：Herself - Musical Guest

Tamara Jaber

饰：Herself

凯莉·米洛

Kylie Minogue

饰：Herself - Special Guest

艾德·希兰

Ed Sheeran

饰：Himself - Special Guest

Jasmine Van den Bogaerde

Jasmine Van den Bogaerde

饰：Herself - Musical Guest

Christina Parie

饰：Herself - Contestant

尼奥·贺兰

Niall James Horan

饰：Himself - One Direction

Kyle Sandilands

饰：Himself - Judge

Hayley Hughes

饰：Contestant

J.C. Mac

饰：Himself

Briden Starr

饰：Herself - Auditionee

丽安娜·刘易斯

Leona Lewis

饰：Herself - Guest Judge

小卡尔文·科多扎尔·布罗德斯

Cordozar Calvin Broadus Jr.

饰：Himself

罗伯特·彼得·西米利安·威廉姆斯

Robert Peter Maximillian Williams

饰：Himself - Performer

Xy Latu

饰：Himself

Jack Vidgen

饰：Himself - Special Guest

Matchbox Twenty

饰：Themselves - Special Guest

路易斯·汤姆林斯

Louis Tomlinson

饰：Himself - One Direction

马尔科姆·大卫·凯利

Malcolm David Kelley

饰：Himself - Guest

艾利斯·库柏

Alice Cooper

饰：Himself - Guest Mentor

Bec Quinn

饰：Herself

Marc Petzke

饰：Himself - Auditionee

Rachel Platten

饰：Herself - Performer

克里斯·艾塞克

Chris Isaak

饰：Himself - Judge

妮可·舒可辛格

Nicole Scherzinger

饰：Herself - The X Factor Judge

Aston Merrygold

Aston Merrygold

饰：Himself - Performer

利亚姆·佩恩

Liam James Payne

饰：Himself - One Direction

Donald Tauvao

饰：Himself

Keith Duffy

饰：Himself

单向乐队

One Direction

饰：Themselves - Guest Judge

Johnny Ruffo

饰：Himself - Contestant

希拉里·达夫

Hilary Duff

饰：Herself - Performer

Beyonce

Beyoncé Giselle Knowles

饰：Herself - Guest Judge

红粉佳人

Pink

饰：Herself - Special Guest

盖·塞巴斯蒂安

Guy Sebastian

饰：Himself - Judge

杰森·德鲁罗

Jason Derulo

饰：Himself - Guest Judge

Mark Holden

饰：Himself - Judge

理查德·布兰森

Richard Branson

饰：Himself

丹妮·米洛

Dannii Minogue

饰：Herself - Judge

Louis Walsh

饰：Himself - The X Factor UK Judge

凯莉·克莱森

Kelly Clarkson

饰：Herself - Special Guest

James Blunt

James Blunt

饰：Himself - Judge

Nicky Pastor

饰：Performer for Reece Mastin

Jonathan Christian La Fontaine

饰：Himself - Contestant

India Rose Madderom

饰：Herself

克兰德利亚·凯莉·罗兰

Kelendria Kelly Rowland

饰：Herself

Vanessa Amorosi

饰：Herself - Special Guest

斯蒂芬·贝拉方特

Stephen Belafonte

饰：Himself - Guest Judge

Josh Brookes

饰：Himself - Contestant

迈克尔·波顿

Michael Bolton

饰：Himself - Special Guest

Wayne Tauvao

饰：Himself

肖恩·蒙德兹

Shawn Mendes

饰：Himself - Performer

Havana Brown

饰：Herself - Special Guest

Russell Gooley

饰：Himself

Jesse Tolo-Paepae

饰：Himself

Vance Joy

饰：Himself - Performer

亚当·兰伯特

Adam Mitchel Anselm Lambert

饰：Himself - Judge

Antony Ginandjar

饰：Himself - Choreographer

亚瑟·雷蒙德四世

Usher Raymond IV

饰：Himself - Guest Judge

The Veronicas

饰：Themselves - Guest Judge

梅兰妮·奇斯霍姆

Melanie Chisholm

饰：Herself - Guest Judge

娜塔莉·安博莉亚

Natalie Imbruglia

饰：Herself - Judge

Mikey Graham

饰：Himself

朴载相

Psy

饰：Himself - Special Guest

史蒂薇·妮克丝

Stevie Nicks

饰：Herself - Special Guest

Lupe Fiasco

Lupe Fiasco

饰：Himself - Musical Guest

Jake Romano

饰：Audience Member

布莱恩·亚当斯

Bryan Adams

饰：Himself - Special Guest