Allison Holker

Self - Judge

Stephen 'tWitch' Boss

Self

Cat Deeley

Self - Host

Matthew Morrison

Self

Maksim Chmerkovskiy

Self

Nigel Lythgoe

Self - Judge

Mary Murphy

Self - Judge

Adam Shankman

Self - Judge

Paula Abdul

Self - Judge

Jason Derulo

Self - Judge

Mia Michaels

Self - Judge

JoJo Siwa

Self - Judge

Jeanine Mason

Self - Contestant

Janette Manrara

Self - Contestant

Vanessa Hudgens

Self - Judge

Lauren Sánchez Bezos

Self - Host

Leah Remini

Self

Marko Germar

Self

Tate McRae

Self - Contestant

Hannahlei Cabanilla

Self - Contestant

Alexis Warr

Self - Contestant

Bailey Munoz

Self - Contestant

Comfort Fedoke

Self

Teddy Coffey

Self - Contestant

Dushaunt Fik-Shun Stegall

Self

Carter Williams

Self - Contestant

Gino Cosculluela

Self - Contestant

Rihanna

Self - Performer

Daniela Avanzini

Self - Contestant

Marcquet Hill

Self - Contestant

Madison Rouge Alvarado

Self - Contestant

Beau Harmon

Self - Contestant

Ezra Sosa

Self - Contestant

Robert Roldan

Self

Jensen Arnold

Self - Contestant

Easton Magliarditi

Self - Contestant

Sasha Mallory

Self

Paul Karmiryan

Self

Slavik Pustovoytov

Self - Contestant

Genessy Castillo

Self - Contestant

Alex Wong

Self - Contestant

Jasmine Harper

Self

Lindsay Arnold

Self

Cyrus Spencer

Self

Koko Iwasaki

Self

Jenna Johnson

Self

Jay Jay Dixonbey

Self - Contestant

Darius Hickman

Self - Contestant

Melanie Moore

Self

Jonathan Platero

Self

Debbie Allen

Self - Guest Judge

Samaria Barnes

Self

Jordan Betscher

Self - Contestant

Tadd Gadduang

Self

Travis Wall

Self

Alexa Marie Anderson

Self

Chehon Wespi-Tschopp

Self

Stephani Sosa

Self - Contestant

Amelia Lowe

Self

Robert Taylor, Jr.

Self

Jess LeProtto

Self

George Lawrence Jr.

Self

Cole Horibe

Self

Witney Carson

Self

Jason Glover

Self

Gaby Diaz

Self - Contestant

Courtney Platt

Herself

Kathryn McCormick

Self - Mentor

Brian Friedman

Dan Karaty

Fergie

Wade Robson

Lady Gaga

Arielle Elonys

Self

Toshihiro Nakazawa

Self

Jason Gilkison

Self - Guest Judge

Roman Nevinchany

Self - Contestant

Jasmine Mason

Self - Contestant

Ryan Ramirez

Self - Contestant

Mariah Spears

Self - Contestant

Miranda Maleski

Self

Wadi Jones

Self - Contestant

Brooklyn Fullmer

Self

Caitlynn Lawson

Self

Makenzie Dustman

Self

Malece Miller

Self

Nico Greetham

Self

Hayley Erbert Hough

Self

Robert Green

Self

Brittany Cherry

Self

Curtis Holland

Self - Contestant

Matthew Kazmierczak

Self

Evan DeBenedetto

Self - Contestant

Kiki Nyemchek

Self - Contestant

Mark Villaver

Self - Contestant

Ryan Conferido

Self - Contestant

Benji Schwimmer

Jaimie Goodwin

Self - Contestant

Heidi Groskreutz

Katee Shean

Self

Jaja Vankova

Self - Contestant

William Wingfield

Self - Contestant

Brandon Bryant

Self - Contestant

Kupono Aweau

Self - Contestant

Evan Kasprzak

Self - Contestant

Phillip Chbeeb

Self

Kayla Jenee Radomski

Self

Tony Bellissimo

Self - Contestant

Ade Obayomi

Self

Karla Garcia

Self

Caitlin Kinney

Self - Contestant

Chelsie Hightower

Self - Contestant

Pasha Kovalev

Self

Mark Kanemura

Self

Lauren Gottlieb

Self - Contestant

D-Trix

Self

Neil Haskell

Self - Contestant

Anya Garnis

Self - Contestant

Timbaland

Natasha Bedingfield

Lloyd

Daddy Yankee

MIKA

Self - Musical Guest

Ryan Cabrera

Jordin Sparks

Katy Perry

Ellen DeGeneres

Katie Holmes

Ciara

LL Cool J

Lev Cameron

Self

Maddie Ziegler

Self - Judge

Drew Barrymore

(archive footage)

Roger L. Jackson

(archive footage)

David Arquette

Adam Sandler

Tyce Diorio

Self - Guest Judge

Robin Antin

Self - Guest Judge

Annie Gratton

Self

Patty Anne Miller

Self

Clarice Ordaz

Self

Joshua Alexander

Self

Jackson Alvarez

Self

Danielle Dominguez

Self

Asher Walker

Self

Rachel Applehans

Self

Sonya Tayeh

Self

Morris Isby

Self

Alexia Juliani

Self

Brandon Morales

Self

Jessica Guadix

Self

Charlene Rose

Self

Jason Looney

Self

Olivia Alboher

Self - Contestant

Sofia Ghavami

Self - Contestant

Vlad Kvartin

Self - Contestant

Nathan Cherry

Self - Contestant

Kida Burns

Self - Contestant

John Talan Church

Self - Contestant

Tahani Anderson

Self - Contestant

Jake Monreal

Self - Contestant

Sheaden Gabriel

Self - Contestant

Hailee Payne

Self - Contestant

Derek Piquette

Self - Contestant

Edson Juarez

Self - Contestant

Yorelis Apolinario

Self - Contestant

Marissa Milele

Self - Contestant

Asaf Goren

Self - Contestant

Burim Jusufi

Self - Contestant

Valerie Rockey

Self - Contestant

Jourdan Epstein

Self - Contestant

Jacque LeWarne

Self - Contestant

Malene Ostergaard

Self - Contestant

Emilio Dosal

Self - Contestant

Ricky Ubeda

Self - Contestant

Alan Bersten

Self - Contestant

Tiffany Maher

Self - Contestant

Janaya French

Self - Contestant

Brandon Mitchell

Self - Contestant

Kent Boyd

Self - Contestant

Alexie Agdeppa

Self - Contestant

Billy Bell

Self - Contestant

Ashley Galvan

Self - Contestant

Ade Chike Torbert

Self - Contestant

Russell Ferguson

Self - Contestant

Ellenore Scott

Self - Contestant

Jonathan 'Legacy' Perez

Self - Contestant

Mollee Gray

Self - Contestant

Nathan Trasoras

Self - Contestant

Noelle Marsh

Self - Contestant

Victor Smalley

Self - Contestant

Karen Hauer

Self - Contestant

Pauline Mata

Self - Contestant

Phillip Attmore

Self - Contestant

Ariana DeBose

Self - Contestant

Joshua Allen

Self - Contestant

Kherington Payne

Self - Contestant

Thayne Jasperson

Self - Contestant

Kourtni Lind-Watson

Self - Contestant

Chris Jarosz

Self - Contestant

Chelsea Traille

Self - Contestant

Susie Garcia

Self - Contestant

Sabra Johnson

Self - Contestant

Lacey Schwimmer

Self - Contestant

Sara Von Gillern

Self - Contestant

Hokuto 'Hok' Konishi

Self - Contestant

Cedric Gardner

Self - Contestant

Jesus Solorio

Self - Contestant

Jessi Peralta

Self - Contestant

Ivan Koumaev

Self - Contestant

Ryan Rankine

Self - Contestant

Dmitry Chaplin

Self - Contestant

Martha Nichols

Self - Contestant

Ashlee Nino

Self - Contestant

Jaymz Tuaileva

Self - Contestant

Joy Spears

Self - Contestant

Nick Lazzarini

Self - Contestant

Jamile McGee

Self - Contestant

Blake McGrath

Self - Contestant

Kamilah Barrett

Self - Contestant

Artem Chigvintsev

Self - Contestant

Snejana Urbin

Self - Contestant

Mandy Moore

Choreographer

Lukas McFarlane

Choreographer

Colleen Wagner

Producer

Barry Adelman

Executive Producer

Jeff Thacker

Executive Producer

Zoe Brown

Producer

Hope Wilson

Producer

Dan Sacks

Producer

Tucker Smith

Producer

Nigel Lythgoe

Executive Producer

Allen Shapiro

Executive Producer

Matt Kinsey

Producer

Mike Yurchuk

Producer

Brian Robinson

Producer

Adam Cooper

Producer

Simon Fuller

Executive Producer

Mike Deffina

Producer

Jensen Moon

Producer

James Breen

Executive Producer

Michelle Basterrechea

Production Manager

Paula Abdul

Executive Producer

Paula Abdul

Music Sound Design and Processing

Sharon Jones

Music

Cassie Ventura

Songs

Arvo Pärt

Additional Soundtrack

Mandy Moore

Creative Producer