Brooklyn-born Don Diamond's most famous role is probably that of the scheming and ambitious, but inept and somewhat cowardly, underling Crazy Cat to Frank DeKova's Chief Wild Eagle in the cult western comedy series F Troop (1965). By the time he got that role he had been an actor for quite some time, starting out in radio in the early 1940s, where he discovered that he had a knack for picking up dialects, especially Spanish. He became so proficient in it that many believed he was actually Spanish or Mexican, when in reality his family came from Russia. His facility in that dialect got him the role as the Mexican sidekick of Kit Carson in the early TV series The Adventures of Kit Carson (1951). He also landed a recurring part as a Spanish corporal in the Disney TV series Zorro (1957). In addition to his TV and film work, he did much voice-over work in both cartoons and commercials.
The Story of Ruth
(Yomar)
The Old Man and the Sea
(Cafe Proprietor (uncredited))
Hit Man
(Nano Zito)
Borderline
(Deusik)
What's a Nice Girl Like You...?
(Duty Sergeant)
The Judge and Jake Wyler
(1st Workman)
When the West Was Fun: A Western Reunion
(Self)
The Kid with the Broken Halo
(Giuseppe)
How to Steal an Airplane
(Sam)
Holiday for Lovers
(Airplane steward)
Tijuana Toads
(Toro (voice))
A Pair of Greenbacks
(Toro (voice))
Go for Croak
(Toro (voice))
The Froggy Froggy Duo
(Toro (voice))
Hop and Chop
(Toro (voice))
Never on Thirsty
(El Toro (voice))
Snake in the Gracias
(Toro (voice))
Two Jumps and a Chump
(Toro (voice))
Mud Squad
(Toro (voice))
The Egg and Ay-Yi-Yi!
(Toro (voice))
Fastest Tongue in the West
(Toro (voice))
A Leap in the Deep
(Toro (voice))
Serape Happy
(Toro (voice))
Croakus Pocus
(Toro (voice))
Frog Jog
(Toro (voice))
A Dopey Hacienda
(Toro (voice))
Flight to the Finish
(Toro (voice))
The Toolbox Murders
(Sgt. Cameron)
Raiders of Old California
(Pepe)
Herbie Goes Bananas
(Local #2)
Shell Game
(Chauffeur)
Mrs. Pollifax — Spy
(DeGamez)
Swingin' Along
(Tony)
Viva Max!
(Hernandez)
Zorro, the Avenger
(Corporal Reyes)
This Year's Blonde
(Lacey's Captain)
Breezy
(Maitre 'D)
77 Sunset Strip
Burke's Law
(Romeo)
WKRP in Cincinnati
(Delivery Man # 1)
Trackdown
Here's Lucy
(Pedro)
F Troop
(Crazy Cat)
L.A. Law
(Trustee Lloyd)
Kraft Suspense Theatre
(Paco)
The Odd Couple
(Man at OTB)
The Flying Nun
The Dick Van Dyke Show
That Girl
Quincy, M.E.
Route 66
One Day at a Time
Gomer Pyle, U.S.M.C.
The Streets of San Francisco
Hawkins
(Reporter #1)
Dynasty
Hill Street Blues
My Favorite Martian
The Hardy Boys / Nancy Drew Mysteries
Newhart
The Lone Ranger
(Pedro Matinez)
Lassie
Cannon
Zorro and Son
Zorro
(Corporal Reyes)
Get Smart
Redigo
(Arturo)
The Immortal
Rawhide
(Mexican Cowhand)
Vega$
Run for Your Life
(Esteban)
The White Shadow
(Salvation Army Man)
Police Story
The High Chaparral
(Miguel)
Peter Gunn
The Life and Legend of Wyatt Earp
The Patty Duke Show
The Big Valley
(Border)
Adventures of Superman
Pete and Gladys
The Gale Storm Show
The Guns of Will Sonnett
The New Adventures of Zorro
Dick Powell's Zane Grey Theatre
(Jones - Outlaw)
Frontier
The Adventures of Kit Carson
26 Men
Trackdown
(Sheriff)
The Wild Wild West
(The Bartender)
Zorro
(Corp. Reyes (uncredited))
The Rockford Files
(Lt. Alvarez)
Rawhide
(Paco (uncredited))
The Big Valley
(Diego)
The Big Valley
(Federale)
Adam-12
(Clerk)
Adam-12
(Sailor)
Dick Powell's Zane Grey Theatre
(Cota)
Run for Your Life
(Taxi Driver)
My Favorite Martian
(Judge Gonzales)
Zorro
(Lancer Hivarro (uncredited))
The Rear Guard
(Foster)
Owen Marshall: Counselor at Law
(Clerk)
The Rockford Files
(Coelho)
The Streets of San Francisco
(Cook)
The Untouchables
(George Keeley)
Rawhide
(Tony)
The Gale Storm Show
(Capt. Alicante)
MacGyver
(Archbishop Fierro)
The Flying Nun
(Dr. Tapia)
Ellery Queen
(Police Officer (uncredited))
The Life and Legend of Wyatt Earp
(Stevens - Suspect (uncredited))
The Untouchables
(Mob Pit Boss (uncredited))
Columbo
(Larry)
Life with Lucy
(Man #2)
Columbo
(Portland Desk Clerk (uncredited))
Zorro
(Cpl. Reyes)
Good Morning World
(Moving Man)
Love, American Style
(Gus)
1st & Ten
(Papa Voytak)