From Wikipedia
Maurice Cass was a character actor in numerous films and television shows. Born in Lithuania, he came to the US to pursue an acting career. His slight build, frizzy hair and pince-nez glasses cast him as the "absent minded professor" or eccentric scientist type in many of his films, such as the character who discovers the element kryptonite in Adventures of Superman. He is best remembered for his role as Professor Newton in the 19...
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Charlie Chan at the Opera
As Mr. Arnold
The Skull Murder Mystery
As Dr. David Turet (uncredited)
The Baroness and the Butler
As Radio Announcer
Menace from Outer Space
As Professor Newton
Mrs. Parkington
As Shopkeeper (uncredited)
The Catman of Paris
As Paul de Roche
King of Burlesque
As The Tailor (uncredited)
Ali Baba Goes to Town
As Omar
Crash of Moons
As Professor Newton
Gold Diggers in Paris
As Mr. Vail
Danger – Love at Work
As Uncle Goliath
Professional Soldier
As Monsieur Le Noir
Once More, My Darling
As Dr. Grasser
Federal Operator 99
As Signor Giuseppe Morello
When Were You Born
As Dr. Merton
Two for Tonight
As Alexander
Life Begins in College
As Dean Moss
Exposed
As Aloysius J. Meggs
Exiled to Shanghai
As Hotel Manager
Spook Busters
As Dr. Bender
Gangs of New York
As Phillips
Arbor Day
As Principal
Manhunt in Space
As Professor Newton
We're Not Married!
As Radio Station Organist (uncredited)
Too Many Women
As Dr. Hamilton
Wife, Doctor and Nurse
As Pompout
Josette
As Ed, the Furrier
Rose of Washington Square
As Mr. Mok
Blood and Sand
As El Milquetoast
Week-End in Havana
As Tailor
The Affairs of Annabel
As Dr. Rubnick (uncredited)
We're Only Human
As Grocer at Deli
Fatal Lady
As Prompter (uncredited)
The Amazing Mr. Williams
As Little Man (uncredited)
Naughty But Nice
As Mr. Maurice, First Witness (uncredited)
Easy to Look At
As Woolens
The Great Man Votes
As Children's Society Report Writer
Second Fiddle
As Alex Blank
The Lady Escapes
As Monsieur Cheval
Mr. Smith Goes to Washington
As Handwriting Expert (uncredited)
Follow Me Quietly
As Book store proprietor
Balalaika
As (uncredited)
The Lone Wolf Strikes
As Jeweler at Martier's
Whispering Smith Speaks
As C. Luddington Colfax
Sunset Trail
As E. Prescott Furbush
Women of Glamour
As Caldwell
Big Town Girl
As Mr. Huff
A Desperate Adventure
As Dornay
The Notorious Lone Wolf
As Asst. Hotel Mgr. (uncredited)
Syncopation
This Is My Affair
As Jeweler
Up in Arms
As Dr. Jones
The Son of Monte Cristo
As Max, Tailor
Lady with Red Hair
As Scenic Artist (uncredited)
Florian
As Mayor
Cross-Country Romance
As James McGillicuddy
No, No, Nanette
As Art Critic
Making the Headlines
As Edgar Kerr
Champagne Waltz
As Hugo
Big Business
As Judge
Nothing Ever Happens
As Madam's Impresario (uncredited)
I've Always Loved You
As Music Teacher 2
Blondie Goes to College
As Dean who gets Tackled
Confession
As Music Professor (uncredited)
Give Us This Night
As Guido
Something to Live For
As Critic (uncredited)
Forbidden Moon
As Prof. Newton
Walking Down Broadway
As Mr. Wentwhistle
Swing Banditry
As Royal C. Cummings (uncredited)
The Magician's Daughter
As Professor Jasper Murdock
A Girl's Best Years
As Judge (uncredited)
High School
As Franklin Jefferson
Mission to Moscow
As Yugoslavian President (uncredited)
Song of My Heart
As Ballet Master
Her Lucky Night
As Papa
Sorrowful Jones
As Psychiatrist (uncredited)
Angel on My Shoulder
As Lucius (uncredited)
High Conquest
As Tony - the Waiter
Two Sisters from Boston
As Music Master (uncredited)
Paris Underground
As Patriot
The Lone Wolf in Paris
As Alfonse Fromont - Hotel Manager
She Gets Her Man
As Mr. Pudge
She Had to Eat
As Fingerprint Expert
The Gypsy Moon
As Prof. Newton
Beyond the Moon
As Professor Newton
Silver Needle in the Sky
As Prof. Newton
The Girl from Manhattan
As Mr. Merkle
Charley's Aunt
As Octogenarian
Pepper
As Doctor
Adventures of Superman
As Meldini
Rocky Jones, Space Ranger