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
Manal El-Feitury
Mother
Joshua Samuel Hector
Man #4
John Wolfe
Horse Knight (uncredited)
Dawn Sherrer
Agent Strode
Ilko Iliev
Professor Doctor Karl Ruprecht Kroenen
Dimiter Banenkin
Leopold Kurtz
Terry Randal
Priest
Christopher Mata
Referee
Charles Shannon
Sgt. Whitman
Carl Hampe
Sir Malcom Frost
Jonathan Steele
Huntsman
Simon Feek
M-11 Operative
Jasmine Audoux-Prevot
Baby Alice
Anna Bankina
Leprous Hag #2
Rut Rafailova
Leprous Hag #3
Peter Oxley
Gunsmith
Nikolay Stanoev
Monk
Elizabeth Mehari Kahsai
Child in Parking Lot #1
Said Barry Abdulai
Child in Parking Lot #2
Katya Peneva
Sarah Bethany Hughes
Natasha Kaplinsky
Anchorwoman
Valentin Stojanov
Man #1
Victor Rangelov
Man #2
Vasil Tsvetkov
Man #3