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

Markos Rounthwaite

Grigori Rasputin

Joel Harlow

Von Krupt

Vanessa Eichholz

Ilsa Hepstein

Nadya Keranova

Sister #1

Maria Tepavicharova

Sister #2

Ana Tabakova

Sister #3

Michael Heath

Butler

Rick Warden

Dr. Edwin Carp

Nitin Ganatra

August Swain

Kristina Klebe

Leni Riefenstahl

Tony van Silva

Abbot

Josh Finan

Novice

Meglena Karalambova

Leprous Hag #1

Laila Morse

Mrs. Harker

Nikolay Stanoev

Monk

Manal El-Feitury

Mother

Joshua Samuel Hector

Man #4

John Wolfe

Horse Knight (uncredited)