Simon Cowell

Self - Judge

Nick Cannon

Self - Host

Howie Mandel

Self - Judge

Sofía Vergara

Self - Judge

Mel B

Self - Judge

Terry Crews

Self - Host

Heidi Klum

Self - Judge

Tyra Banks

Self - Host

Regis Philbin

Self - Host

Jerry Springer

Self - Host

Piers Morgan

Self - Judge

David Hasselhoff

Self - Judge

Brandy Norwood

Self - Judge

Sharon Osbourne

Self - Judge

Howard Stern

Self - Judge

Stevie Nicks

Acteur

Avril Lavigne

Self

Neal E. Boyd

Self

Natasha Bedingfield

Self

Donald Trump

Self

Tom Green

Self - Performer

Collins Key

Himself - Contestant

Jeff Dunham

Himself

Grandma Lee

Self

Lori Mae Hernandez

Self - Contestant

Julianne Hough

Self - Judge

Gabrielle Union

Self - Judge

Cassadee Pope

Herself - Musical Guest

Liam Payne

Himself - Musical Guest

Alesha Dixon

Self

Harry Styles

Himself - Musical Guest

Niall Horan

Himself - Musical Guest

Zayn Malik

Himself - Musical Guest

Eric Stonestreet

Self - Guest Judge

Kelly Clarkson

Self - Guest Judge

Kenan Thompson

Self - Guest Judge

Kadan Rockett

Self

Karen Goudreault

Self

Dominic Lacasse

Self

Terry Fator

Self

Alexandre Leblanc

Self - The Brat Pack

Matthew Richardson

Self - Contestant

Carlo Zapata

Self

Sofia Skvirsky

Self

Taylor Swift

Self

Easton Magliarditi

Contestant

Izzy Howard

Contestant

Ethan Jan

Contestant

JoJo Siwa

Self

Aidan Bryant

Self - Contestant

Dustin Tavella

Self - Contestant

Greg Morton

Self - Contestant

Angelina Jordan

Self - Contestant

Darci Lynne Farmer

Contestant

Ron Sharpe

Self - Contestant

Barbra Russell-Sharpe

Self - Contestant

Grace VanderWaal

Self - Contestant

Logan Sharpe

Self - Contestant

Louis Tomlinson

Himself - Musical Guest

Samantha Sharpe

Self - Contestant

Aidan Sharpe

Self - Contestant

Connor Sharpe

Self - Contestant

Alfie Andrew

Self - Contestant

Merrick Hanna

Contestant

Ahren Belisle

Self - Contestant

Dan Meyer

Self

Sophie Fatu

Contestant

Jason Forbach

Performer

Tom Sandoval

Self - Contestant

Daniela Avanzini

Self

Jessica Sanchez

Self - Contestant

Bianca Ryan

Self - Contestant

Aly Michalka

Self - Performer

AJ Michalka

Self - Performer

Penn Jillette

Self - Performer

Teller

Self - Performer

Teddy Geiger

Self - Performer

Rappin' Granny

Self - Contestant

Dani Shay

Self - Contestant

Brian Justin Crum

Self - Contestant