David Bradley Professor Abraham Setrakian Actor Corey Stoll Dr. Ephraim Goodweather Actor Kevin Durand Vasiliy Fet Actor Richard Sammel Thomas Eichhorst Actor Natalie Brown Kelly Goodweather Actor Jonathan Hyde Eldritch Palmer Actor Miguel Gomez Augustin "Gus" Elizalde Actor Max Charles Zack Goodweather Actor Ruta Gedmintas Dutch Velders Actor Rupert Penry-Jones Mr. Quinlan Actor Samantha Mathis Justine Feraldo Actor Joaquín Cosio Angel Guzman Actor Guillermo del Toro Executive Producer Chuck Hogan Executive Producer, Writer Carlton Cuse Executive Producer, Writer, Director Gary Ungar Executive Producer David Weddle Writer Regina Corrado Writer T.J. Scott Director Liz Phang Writer Bradley Thompson Writer Deran Sarafian Director Ken Girotti Director J. Miles Dale Director Vincenzo Natali Director