David Harbour

Hellboy / Anung Un Rama

Milla Jovovich

Vivienne Nimue, the Blood Queen

Ian McShane

Trevor "Broom" Bruttenholm

Sasha Lane

Alice Monaghan

Daniel Dae Kim

Ben Daimio

Thomas Haden Church

Lobster Johnson

Stephen Graham

Gruagach (voice)

Douglas Tait

Gruagach

Sophie Okonedo

Lady Hatton

Alistair Petrie

Lord Adam Glaren

Brian Gleeson

Merlin

Penelope Mitchell

Ganeida

Mark Stanley

Arthur

Emma Tate

Baba Yaga (voice)

Troy James

Baba Yaga

Mario de la Rosa

Esteban Ruiz / Camazotz

Ava Brennan

Alice's Mother

Anthony Delaney

Alice's Father

Atanas Srebrev

Agent Madison

Dawn Sherrer

Agent Strode

Markos Rounthwaite

Grigori Rasputin

Joel Harlow

Von Krupt

Dimiter Banenkin

Leopold Kurtz

Vanessa Eichholz

Ilsa Hepstein

Nadya Keranova

Sister #1

Maria Tepavicharova

Sister #2

Ana Tabakova

Sister #3

Christopher Mata

Referee

Michael Heath

Butler

Rick Warden

Dr. Edwin Carp

Nitin Ganatra

August Swain

Kristina Klebe

Leni Riefenstahl

Carl Hampe

Sir Malcom Frost

Tony van Silva

Abbot

Josh Finan

Novice

Jonathan Steele

Huntsman

Simon Feek

M-11 Operative

Jasmine Audoux-Prevot

Baby Alice

Meglena Karalambova

Leprous Hag #1

Anna Bankina

Leprous Hag #2

Rut Rafailova

Leprous Hag #3

Laila Morse

Mrs. Harker

Peter Oxley

Gunsmith

Nikolay Stanoev

Monk

Manal El-Feitury

Mother

Elizabeth Mehari Kahsai

Child in Parking Lot #1

Katya Peneva

Sarah Bethany Hughes

Natasha Kaplinsky

Anchorwoman

Valentin Stojanov

Man #1

Victor Rangelov

Man #2

Vasil Tsvetkov

Man #3

Joshua Samuel Hector

Man #4

John Wolfe

Horse Knight (uncredited)