Dr. John Dolittle

Robert Downey Jr.

King Rassouli

Antonio Banderas

Dr. Blair Müdfly

Michael Sheen

Lord Thomas Badgley

Jim Broadbent

Queen Victoria

Jessie Buckley

Tommy Stubbins

Harry Collett

Poly

Emma Thompson

Lily Dolittle

Kasia Smutniak

Lady Rose

Carmel Laniado

Chee-Chee

Rami Malek

Arnall Stubbins

Ralph Ineson

Yoshi (voice)

John Cena

Bethan Stubbins

Joanna Page

Plimpton (voice)

Kumail Nanjiani

Dab-Dab (voice)

Octavia Spencer

Arnall Stubbins Jr.

Sonny Ashbourne Serkis

Jip

Tom Holland

Sir Gareth

Oliver Chris

Kevin

Craig Robinson

Archbishop

Clive Francis

Barry

Ralph Fiennes

Navy Man

Paul Holowaty

Betsy

Selena Gomez

Captain William Derrick

Elliot Barnes-Worrell

Tutu (voice)

Marion Cotillard

Lieutenant

Mark Umbers

Don Carpenterino

David Sheinkopf

Jeff the Prisoner

Sid Sagar

Postman

Martin Pemberton

Dragon (voice)

Frances de la Tour

Nick A. Fisher

James the Dragonfly

Jason Mantzoukas

Clyde

Matt King

Pirate

Samson Kayo

Pirate / Animal Performer

John-Luke Roberts

Prisoner

Joseph Balderrama

Prisoner

Daniel Hoffmann-Gill

Animal Performer

Jane Leaney

On Set Chee-Chee / Animal Performer

Josh Jefferies

On Set Yoshi / Animal Performer

Shaun McKee

Pirate/Animal Performer

John Luke Robertson

Courtier

Georgie-May Tearle

Humphrey the Whale (voice)

Tim Treloar

Beard Mouse and Leona (voice)

Jim Carretta

Mini the Sugar Glider (voice)

Nick Fisher

Mouse (voice)

Ranjani Brow

Mouse (voice)

Kelly Stables

Army Ant (voice)

Scott Menville

Baby Animal (voice)

Gia Davis

Baby Animal (voice)

Henry Holcomb

Baby Animal (voice)

Kyrie McAlpin

Baby Animal (voice)

Isley Zamora

Tobias Meister

Pirate

Stewart Scudamore

Marcus Off

Monica Bielenstein

Bastian Sierich

Animal Performer

Richard Soames

Udo Schenk

Patrizia Carlucci

Director

Stephen Gaghan