Ron Perlman

Hellboy (voice)

Selma Blair

Liz Sherman (voice)

Doug Jones

Abe Sapien (voice)

Peri Gilpin

Professor Kate Corrigan (voice)

Gwendoline Yeo

Kitsune (voice)

Dee Bradley Baker

Lightning / Kappa / Pilot (voice)

Phil LaMarr

Bureau Member / Pilot / Additional Voices (voice)

Mitchell Whitfield

Russell Thorne (voice)

Kim Mai Guest

Additional Voices (voice)

Michael Hagiwara

Additional Voices (voice)

Yuriana Kim

Additional Voices (voice)

Clyde Kusatsu

Additional Voices (voice)

Liza del Mundo

Additional Voices (voice)

Paul Nakauchi

Additional Voices (voice)

James Sie

Additional Voices (voice)