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 1954 TV science fiction series Rocky Jones, Space Ranger.
Movies
Charlie Chan at the Opera
Mr. Arnold
The Baroness and the Butler
Radio Announcer
Menace from Outer Space
Professor Newton
The Catman of Paris
Paul de Roche
Ali Baba Goes to Town
Omar
Gold Diggers in Paris
Mr. Vail
Danger – Love at Work
Uncle Goliath
Professional Soldier
Monsieur Le Noir
Once More, My Darling
Dr. Grasser
Two for Tonight
Alexander
Federal Operator 99
Signor Giuseppe Morello
When Were You Born
Dr. Merton
Exposed
Aloysius J. Meggs
Life Begins in College
Dean Moss
Exiled to Shanghai
Hotel Manager
Gangs of New York
Phillips
Arbor Day
monsieur Cass
Manhunt in Space
Professor Newton
Too Many Women
Dr. Hamilton
Wife, Doctor and Nurse
Pompout
Josette
Ed, the Furrier
Rose of Washington Square
Mr. Mok
Blood and Sand
El Milquetoast
Week-End in Havana
Tailor
We're Only Human
Grocer at Deli
Fatal Lady
Prompter (uncredited)
The Affairs of Annabel
Dr. Rubnick (uncredited)
Naughty But Nice
Mr. Maurice, First Witness (uncredited)
Mr. Smith Goes to Washington
Handwriting Expert (uncredited)
The Amazing Mr. Williams
Little Man (uncredited)
Florian
Mayor
The Great Man Votes
Children's Society Report Writer
Second Fiddle
Alex Blank
Balalaika
(uncredited)
The Lone Wolf Strikes
Jeweler at Martier's
Whispering Smith Speaks
C. Luddington Colfax
Sunset Trail
E. Prescott Furbush
Women of Glamour
Caldwell
Big Town Girl
Mr. Huff
A Desperate Adventure
Dornay
This Is My Affair
Jeweler
Crash of Moons
Professor Newton
The Son of Monte Cristo
Max, Tailor
Lady with Red Hair
Scenic Artist (uncredited)
Cross-Country Romance
James McGillicuddy
No, No, Nanette
Art Critic
Making the Headlines
Edgar Kerr
Champagne Waltz
Hugo
Big Business
Judge
Nothing Ever Happens
Madam's Impresario (uncredited)
I've Always Loved You
Music Teacher 2
Blondie Goes to College
Dean who gets Tackled
Confession
Music Professor (uncredited)
Give Us This Night
Guido
Something to Live For
Critic (uncredited)
Forbidden Moon
Prof. Newton
Walking Down Broadway
Mr. Wentwhistle
The Magician's Daughter
Professor Jasper Murdock
High School
Franklin Jefferson
Swing Banditry
Royal C. Cummings (uncredited)
A Girl's Best Years
Judge (uncredited)
Mission to Moscow
Yugoslavian President (uncredited)
Song of My Heart
Ballet Master
Her Lucky Night
Papa
Angel on My Shoulder
Lucius (uncredited)
Sorrowful Jones
Psychiatrist (uncredited)
High Conquest
Tony - the Waiter
Two Sisters from Boston
Music Master (uncredited)
Paris Underground
Patriot
The Lone Wolf in Paris
Alfonse Fromont - Hotel Manager
She Gets Her Man
Mr. Pudge
She Had to Eat
Fingerprint Expert
The Gypsy Moon
Prof. Newton
Beyond the Moon
Professor Newton
Silver Needle in the Sky
Prof. Newton
The Girl from Manhattan
Mr. Merkle
Charley's Aunt
Octogenarian
Pepper
Doctor
Spook Busters
Dr. Bender
Easy to Look At
Woolens
The Skull Murder Mystery
Dr. David Turet (uncredited)
Mrs. Parkington
Shopkeeper (uncredited)
King of Burlesque
The Tailor (uncredited)
We're Not Married!
Radio Station Organist (uncredited)
Follow Me Quietly
Book store proprietor
The Lady Escapes
Monsieur Cheval
The Notorious Lone Wolf
Asst. Hotel Mgr. (uncredited)
Syncopation
Shows
Adventures of Superman
Meldini
Rocky Jones, Space Ranger