From Wikipedia George Zucco (11 January 1886 – 27 May 1960) was an English character actor who appeared, almost always in supporting roles, in 96 films during a career spanning two decades, from 1931 to 1951. In his horror films, he often played a suave villain or a mad doctor.
House of Frankenstein
(Prof. Bruno Lampini)
Lured
(H.R. Barrett)
Midnight Manhunt
(Jelke)
The Mummy's Hand
(Professor Andoheb)
Scared to Death
(Dr. Josef Van Ee)
The Hunchback of Notre Dame
(Procurator)
The Roof
(James Renton)
Charlie Chan in Honolulu
(Dr. Cardigan)
A Woman's Face
(Defense Attorney)
Voodoo Man
(Nicholas)
Dead Men Walk
(Lloyd Clayton / Elwyn Clayton)
Fog Island
(Leo Grainger)
The Mummy's Tomb
(Andoheb)
The Mummy's Ghost
(Andoheb, High Priest of Arkan)
Who Killed Doc Robbin?
(Doc Robbin)
The Flying Serpent
(Prof. Andrew Forbes)
Return of the Ape Man
(Ape Man)
The Black Swan
(Lord Denby)
The Barkleys of Broadway
(The Judge)
After the Thin Man
(Dr. Adolph Kammer)
Rosalie
(General Maroff)
Arrest Bulldog Drummond
(Rolf Alferson)
New Moon
(Vicomte Ribaud)
Sherlock Holmes in Washington
(Heinrich Hinckel aka Richard Stanley)
Moss Rose
(Craxton)
Madame Bovary
(Dubocage)
Saratoga
(Dr. Bierd)
The Adventures of Sherlock Holmes
(Professor Moriarty)
Where There's Life
(Paul Stertorius)
Dr. Renault's Secret
(Dr. Robert Renault)
Ellery Queen and the Murder Ring
(Dr. Edwin L. Jannery)
Tarzan and the Mermaids
(Palanth, the High Priest)
The Mad Ghoul
(Dr. Alfred Morris)
Shadows in the Night
(Frank Swift)
The Seventh Cross
(Fahrenburg)
Week-End at the Waldorf
(Bey of Aribajan)
The Black Raven
(Amos Bradford)
My Favorite Blonde
(Dr. Hugo Streger)
The Monster and the Girl
(Dr. Parry)
The Mad Monster
(Lorenzo Cameron)
Arsène Lupin Returns
(Prefect of Police)
Captain Fury
(Arnold Trist)
Dracula: A Cinematic Scrapbook
(Dr. Joseph Van Ee (archive footage))
Half Way to Shanghai
(Peter van Hoost)
Sudan
(Horadef)
Holy Matrimony
(Mr. Crepitude)
The Magnificent Fraud
(Dr. Luis Virgo)
Dark Streets of Cairo
(Abbadi)
Having Wonderful Crime
(King aka The Great Movel)
Secret Service Investigator
(Otto Dagoff)
Harbor of Missing Men
(H.G. Danziger)
The Imperfect Lady
(Mr. Mallam)
Desire Me
(Father Donnard)
London by Night
(Inspector Jefferson)
Terror in the Pharaoh's Tomb
(Dr. Moriarty (archive footage))
Parnell
(Sir Charles Arthur Russell)
Fast Company
(Otto Brockler)
Arise, My Love
(Prison Governor)
Let's Dance
(Judge Mackenzie)
Topper Returns
(Dr. Jeris)
Here I Am a Stranger
(James K. Spaulding)
Souls at Sea
(Woodley)
Suez
(Prime Minister)
Autumn Crocus
(Revered Mayne)
The First Legion
(Father Robert Stuart)
Vacation from Love
(Dr. Waxton)
The Horror of It All
(Dr. Cameron (archive footage))
Hold That Blonde!
(Dr. Pavel Storasky)
Madame X
(Dr. LaFarge)
Captain from Castile
(Marquis De Carvajal)
Abdul the Damned
(Officer of the Firing Squad)
The Cat and the Canary
(Lawyer Crosby)
The Man from Toronto
(Squire)
The Lady Is Willing
(Bailiff)
The Midshipmaid
(Lord Dore)
The Good Companions
(Fauntley)
The Man Who Could Work Miracles
(The Colonel's Butler)
Road House
(Hotel Manager)
The Pirate
(The Viceroy)
Flame Of Stamboul
(The Voice)
Never a Dull Moment
(Tony Rocco)
International Lady
(Webster)
Confidential Agent
(Detective Geddes)
David and Bathsheba
(Egyptian Ambassador (uncredited))
What’s in a Name?
(Foot)
It's a Bet
(Convict)
The Common Round
(Dr. Pyke)
Sinner Take All
(Crowley Bascomb)
What Happened Then?
(Inspector Hull)
Dreyfus
(Jacques Marie Eugène Godefroy Cavaignac)
The Bride Wore Red
(Count Armalia)
Watchtower Over Tomorrow
(Security Council Chair)
The Firefly
(Secret Service Chief)
Something Always Happens
(Proprietor of the Maison de Paris)
Lord Jeff
(James 'Jim' Hampstead)
Doom of Dracula
(Prof. Lampini)
The Secret Garden
(Dr. Fortescue)
Marie Antoinette
(Governor of Conciergerie (uncredited))
Joan of Arc
(Constable of Clervaux)
There Goes the Bride
(Prosecutor (uncredited))