Halle Bailey

Character: Ariel

Jonah Hauer-King

Character: Eric

Melissa McCarthy

Character: Ursula

Javier Bardem

Character: King Triton

Noma Dumezweni

Character: The Queen

Art Malik

Character: Sir Grimsby

Daveed Diggs

Character: Sebastian (voice)

Jacob Tremblay

Character: Flounder (voice)

Awkwafina

Character: Scuttle (voice)

Jessica Alexander

Character: Vanessa

Martina Laird

Character: Lashana

Emily Coates

Character: Rosa

Christopher Fairbank

Character: Hawkins

John Dagleish

Character: Mulligan

Matt Carver

Character: Cabin Boy

Jude Akuwudike

Character: Joshua

Lorena Andrea

Character: Perla

Simone Ashley

Character: Indira

Karolina Conchet

Character: Mala

Sienna King

Character: Tamika

Kajsa Mohammar

Character: Karina

Nathalie Sorrell

Character: Caspia

Jodi Benson

Character: Market Vendor

Julz West

Character: Hat Vendor

Shay Barclay

Character: Coconut Seller / Dancer

Arina Li

Character: Flower Vendor

Russell Balogh

Character: Triton Guard #1

Adrian Christopher

Character: Triton Guard #2

Leon Cooke

Character: Core Dancer

Tarik Frimpong

Character: Core Dancer

Chris George

Character: Core Dancer

Yasmin Harrison

Character: Core Dancer

Erica Stubbs

Character: Core Dancer

Kate Thompson

Character: Core Dancer

Jonathan Bishop

Character: Dancer

Aaron Bryan

Character: Dancer

Sophie Carmen-Jones

Character: Dancer

Jon-Scott Clark

Character: Dancer

Cameron Valentina

Character: Dancer

Austyn Farrell

Character: Dancer

Cecil Jee

Character: Dancer

Ben Hukin

Character: Dancer

Andrew Lyle-Pinnock

Character: Dancer

Chanel Mian

Character: Dancer

Ebony Molina

Character: Dancer

Ian Oswald

Character: Dancer

Oliver Ravelin

Character: Dancer

Charles Ruhrmund

Character: Dancer

Craig Stein

Character: Dancer

Nicole Valverde

Character: Dancer

Sasha Watson Lobo

Character: Dancer

Johnny White

Character: Dancer

Charlotte Wilmott

Character: Dancer

Bobby Windebank

Character: Dancer

Clifton Brown

Character: 'Under the Sea' Special Performer

Jeroboam Bozeman

Character: 'Under the Sea' Special Performer

Sarah Daley-Perdomo

Character: 'Under the Sea' Special Performer

Ghrai DeVore-Stokes

Character: 'Under the Sea' Special Performer

Samantha Figgins

Character: 'Under the Sea' Special Performer

Vernard J. Gilmore

Character: 'Under the Sea' Special Performer

Jacqueline Green

Character: 'Under the Sea' Special Performer

Michael Jackson, Jr.

Character: 'Under the Sea' Special Performer

Yannick Lebrun

Character: 'Under the Sea' Special Performer

Renaldo Maurice

Character: 'Under the Sea' Special Performer

Chalvar Monteiro

Character: 'Under the Sea' Special Performer

Danica Paulos

Character: 'Under the Sea' Special Performer

Belen Pereyra

Character: 'Under the Sea' Special Performer

Constance Stamatiou

Character: 'Under the Sea' Special Performer

Jermaine Terry

Character: 'Under the Sea' Special Performer

Ben Marshall

Character: Ship Musician

Matt Quinn

Character: Ship Musician

Sam Sweeney

Character: Ship Musician

Charlotte Bazeley

Character: Merfolk

Noa Nikita Bleeker

Character: Merfolk

Glen Campbell

Character: Merfolk

Sonny Charlton

Character: Merfolk

Marcus Hodson

Character: Merfolk

Alexia Hortal

Character: Merfolk

Janine Johnson

Character: Merfolk

Mia Juul

Character: Merfolk

Jeffin Kunjumon

Character: Merfolk

Jennifer Leung

Character: Merfolk

Mia Maugé

Character: Merfolk

Jacob Maynard

Character: Merfolk

Busola Peters

Character: Merfolk

Stefano Tomadini

Character: Merfolk

Andy Young

Character: Merfolk

Hunter Allen

Character: Merkid

Ava Azizi

Character: Merkid

Zaine Daniel Dillon

Character: Merkid

Mischa Hayward

Character: Merkid

Roy Hu

Character: Merkid

Seyan Patel

Character: Merkid

Taitum Pitfield

Character: Merkid

Eva Polakovs

Character: Merkid

Isabelle Ung

Character: Merkid

Ayo Hana

Character: Stallholder (uncredited)