| Title | Year | Status | Character |
|---|
| Wanted: Dead or Alive | 1951 | | Henchman (uncredited) |
| The Cisco Kid | 1950-1951 | TV Series | Sheriff / Station Agent |
| The Blazing Sun | 1950 | | Al Bartlett & Mark Bartlett |
| Last of the Buccaneers | 1950 | | Pirate Captain (uncredited) |
| Indian Territory | 1950 | | 3rd Man Shot by Apache (uncredited) |
| Surrender | 1950 | | Rider Warning of Gregg (uncredited) |
| A Life of Her Own | 1950 | | Man Asking Invitation (uncredited) |
| Western Courage | 1950 | Short | Chuck Gorman |
| A Wonderful Life | 1950 | Short | Brace Doctor (uncredited) |
| Jiggs and Maggie Out West | 1950 | | Henchman Slim (uncredited) |
| Code of the Silver Sage | 1950 | | Henchman Dick Cantwell |
| Mule Train | 1950 | | Latigo (uncredited) |
| Radar Secret Service | 1950 | | Michael's Henchman |
| Davy Crockett, Indian Scout | 1950 | | Sgt. Gordon (as Kenneth Duncan) |
| Range Land | 1949 | | Sheriff Winters |
| Sons of New Mexico | 1949 | | Henchman Ed (uncredited) |
| Lawless Code | 1949 | | Tom Blaine - Henchman |
| Riders in the Sky | 1949 | | Henchman Travis |
| Deputy Marshal | 1949 | | Cal Freeling |
| Roaring Westward | 1949 | | Morgan |
| Range Justice | 1949 | | Henchman Kirk |
| West of El Dorado | 1949 | | Steve Dallas |
| Across the Rio Grande | 1949 | | Joe Bardet |
| Stampede | 1949 | | Steve (uncredited) |
| Law of the West | 1949 | | Frank Stevens |
| Gun Runner | 1949 | | Nebraska |
| Shadows of the West | 1949 | | Bill Mayberry |
| Crashing Thru | 1949 | | Ranger Tim Reymond |
| Hidden Danger | 1948 | | Henchman Bender |
| Sundown in Santa Fe | 1948 | | Wagon Driver (uncredited) |
| Close-Up | 1948 | | Detective (uncredited) |
| Echo Ranch | 1948 | Short | Gang Leader |
| Powder River Gunfire | 1948 | Short | Kenne |
| Hidden Valley Days | 1948 | Short | Outlaw Leader |
| The Trespasser | 1947 | | Fellow (uncredited) |
| Buck Privates Come Home | 1947 | | Sergeant on Sidewalk (uncredited) |
| Twilight on the Rio Grande | 1947 | | U.S. Customs Agent Lou Evers (uncredited) |
| Angel and the Badman | 1947 | | Gambler (uncredited) |
| Sioux City Sue | 1946/I | | Steve Crawley (uncredited) |
| Santa Fe Uprising | 1946 | | Rustler talking with Jackson |
| The Crimson Ghost | 1946 | | Dr. Chambers [Chs. 1-2, 8] |
| Roll on Texas Moon | 1946 | | Henchman Brannigan |
| Rio Grande Raiders | 1946 | | Henchman Steve |
| The Mysterious Mr. Valentine | 1946 | | Sam Priestly |
| G.I. War Brides | 1946 | uncredited | |
| Conquest of Cheyenne | 1946 | | Geologist McBride |
| Red River Renegades | 1946 | | Henchman Hackett |
| Night Train to Memphis | 1946 | | Asa Morgan |
| My Pal Trigger | 1946 | | Croupier |
| Traffic in Crime | 1946 | | Henchman (uncredited) |
| Man from Rainbow Valley | 1946 | | Lafe |
| In Old Sacramento | 1946 | | Deputy (uncredited) |
| Sun Valley Cyclone | 1946 | | Dow |
| Rainbow Over Texas | 1946 | | Henchman Pete McAvoy |
| Home on the Range | 1946 | | Henchman |
| Sheriff of Redwood Valley | 1946 | | Jackson |
| California Gold Rush | 1946 | | Henchman Felton |
| A Guy Could Change | 1946 | | Frank Hanlon |
| The Phantom Rider | 1946 | | Henchman Ben Brady |
| The Scarlet Horseman | 1946 | | Henchman (uncredited) |
| Wagon Wheels Westward | 1945 | | Henchman Joe |
| Dakota | 1945 | | Henchman (uncredited) |
| Rough Riders of Cheyenne | 1945 | | Lance - Henchman |
| Love, Honor and Goodbye | 1945 | | Counter Man (uncredited) |
| The Purple Monster Strikes | 1945 | | Charles Mitchell [Chs. 1-2, 10] |
| Hitchhike to Happiness | 1945 | | Man in bar with Alice after radio show (uncredited) |
| Oregon Trail | 1945 | | Henchman Johnny Slade |
| Trail of Kit Carson | 1945 | | Trigger Chandler |
| Road to Alcatraz | 1945 | | Servant |
| The Chicago Kid | 1945 | | Al |
| Bells of Rosarita | 1945 | | Kidnapper (uncredited) |
| A Sporting Chance | 1945 | | Boarder |
| Santa Fe Saddlemates | 1945 | | Brazos Kane |
| Flame of Barbary Coast | 1945 | | Gambler (uncredited) |
| The Phantom Speaks | 1945 | | Murder Victim (uncredited) |
| Corpus Christi Bandits | 1945 | | Spade - Henchman |
| Manhunt of Mystery Island | 1945 | | Sidney Brand |
| Sheriff of Las Vegas | 1944 | | Whitey - Henchman |
| Thoroughbreds | 1944 | uncredited | |
| Brazil | 1944 | | Cab Driver (uncredited) |
| Vigilantes of Dodge City | 1944 | | Dave Brewster |
| Sheriff of Sundown | 1944 | | Arthur Wilkes - Secretary |
| End of the Road | 1944 | | Al Herman |
| Storm Over Lisbon | 1944 | | Paul--Deresco Aide |
| My Buddy | 1944 | | Convict (uncredited) |
| Cheyenne Wildcat | 1944 | | Henchman Pete |
| San Fernando Valley | 1944 | | Horse Thief (uncredited) |
| Stagecoach to Monterey | 1944 | | Henchman Joe |
| Haunted Harbor | 1944 | | Gregg |
| Song of Nevada | 1944 | | Thompson's Wagon-Race Driver (uncredited) |
| The Girl Who Dared | 1944 | | Dr. Paul Dexter |
| Secrets of Scotland Yard | 1944 | | Steward (uncredited) |
| Marshal of Reno | 1944 | | Adams - Henchman |
| Man from Frisco | 1944 | | Foreman (uncredited) |
| Silent Partner | 1944 | | Gangster (uncredited) |
| The Tiger Woman | 1944 | | Gentry - Henchman [Chs. 7, 11] |
| Tucson Raiders | 1944 | | Henchman (voice, uncredited) |
| Outlaws of Santa Fe | 1944 | | Henchman Chuck |
| The Laramie Trail | 1944 | | Bud's Partner (uncredited) |
| Hidden Valley Outlaws | 1944 | | Henchman Ben Bannon |
| Mojave Firebrand | 1944 | | Henchman |
| Beneath Western Skies | 1944 | | Deputy Barrow |
| Captain America | 1944 | | Ed Graham [Ch. 14] (uncredited) |
| The Fighting Seabees | 1944 | | Construction Worker (uncredited) |
| Hands Across the Border | 1944 | | Deputy Simmons (uncredited) |
| Pride of the Plains | 1944 | | Henchman Snyder |
| Raiders of Sunset Pass | 1943 | | Henchman Tex |
| Pistol Packin' Mama | 1943 | | Doorman (uncredited) |
| In Old Oklahoma | 1943 | | Indignant Businessman on Train (uncredited) |
| Canyon City | 1943 | | Henchman Turner (uncredited) |
| Overland Mail Robbery | 1943 | | Hank (uncredited) |
| The Man from the Rio Grande | 1943 | | Henchman |
| Blazing Guns | 1943 | | Henchman Red Higgins (as Ken Duncan) |
| Swing Shift Maisie | 1943 | | Ann's Date (uncredited) |
| Trail of Terror | 1943 | | Henchman Tom |
| Blazing Frontier | 1943 | | Homesteader Clark (uncredited) |
| Wagon Tracks West | 1943 | | Henchman (uncredited) |
| The Law Rides Again | 1943 | | Sheriff Jeff (as Ken Duncan) |
| Batman | 1943 | | Fred, the Mechanic [Ch. 5-6] (uncredited) |
| Fugitive from Sonora | 1943 | | R. J. Cole (as Ken Duncan) |
| Wolves of the Range | 1943 | | Henchman Adams (as Ken Duncan) |
| Border Buckaroos | 1943 | | Tom Bancroft (as Ken Duncan) |
| The Avenging Rider | 1943 | | Blackie (as Kenneth Duncan) |
| Days of Old Cheyenne | 1943 | | Henchman Pete (as Ken Duncan) |
| Daredevils of the West | 1943 | | George Hooker [Ch. 9] (as Ken Duncan) |
| Santa Fe Scouts | 1943 | | Hoodlum (uncredited) |
| Wild Horse Stampede | 1943 | | Hanley (as Ken Duncan) |
| Cheyenne Roundup | 1943 | | Express Rider (uncredited) |
| The Kid Rides Again | 1943 | | Cowboy in Saloon (uncredited) |
| The Sundown Kid | 1942 | | Henchman (as Ken Duncan) |
| The Valley of Vanishing Men | 1942 | | Logan (uncredited) |
| Trail Riders | 1942 | | Marshal Frank Hammond (as Kenneth Duncan) |
| Outlaws of Boulder Pass | 1942 | | Henchman Mulie (as Ken Duncan) |
| Valley of Hunted Men | 1942 | | Nazi (uncredited) |
| Red River Robin Hood | 1942 | | Henchman Ed Rance (as Kenneth Duncan) |
| Texas to Bataan | 1942 | | Captain Anders (as Kenneth Duncan) |
| Overland Stagecoach | 1942 | | Posse Rider (uncredited) |
| Foreign Agent | 1942 | | Tom, Federal Agent (uncredited) |
| Isle of Missing Men | 1942 | | Bob Henderson (as Kenneth Duncan) |
| The Secret Code | 1942 | | Marvin [Chs.1-3,5-6] |
| Law and Order | 1942 | | Henchman Durgan (as Ken Duncan) |
| The Sombrero Kid | 1942 | | Pete Raymond - Henchman (uncredited) |
| Perils of Nyoka | 1942 | | Abu (as Kenneth Duncan) |
| Westward Ho | 1942 | | Henchman Dallas (uncredited) |
| The Lone Rider in Cheyenne | 1942 | | Deputy Walt (as Ken Duncan) |
| Man with Two Lives | 1942 | | Jess Fowler (as Kenneth Duncan) |
| Raiders of the West | 1942 | | Harris - Dandy Gambler (uncredited) |
| Code of the Outlaw | 1942 | | Henchman Plug (as Ken Duncan) |
| The Lone Rider and the Bandit | 1942 | | Saloon Henchman (uncredited) |
| Texas Man Hunt | 1942 | | Henchman Lake (uncredited) |
| Billy the Kid's Round-Up | 1941 | | Henchman Joe (uncredited) |
| A Missouri Outlaw | 1941 | | Henchman Pete Chandler (as Ken Duncan) |
| The Lone Rider Fights Back | 1941 | | Barfly (uncredited) |
| Riding the Sunset Trail | 1941 | | Jay Lynch (as Ken Duncan) |
| Billy the Kid Wanted | 1941 | | Henchman (uncredited) |
| King of the Texas Rangers | 1941 | | Nick - Henchman [Chs. 1-4,6-9] (as Kenneth Duncan) |
| The Apache Kid | 1941 | | Henchman Benton (uncredited) |
| Dynamite Canyon | 1941 | | Henchman Rod (as Ken Duncan) |
| The Deadly Game | 1941 | | Henchman (as Kenneth Duncan) |
| The Texas Marshal | 1941 | | Henchman Lefty (uncredited) |
| Billy the Kid in Santa Fe | 1941 | | Henchman Scotty (as Ken Duncan) |
| The Spider Returns | 1941 | | Ram Singh, Wentworth's Hindu Chauffeur (as Kenneth Duncan) |
| Adventures of Captain Marvel | 1941 | | Barnett - Chief Henchman [Ch. 2-10] (as Kenneth Duncan) |
| Outlaws of the Rio Grande | 1941 | | Marshal Bob Day (as Ken Duncan) |
| Buck Privates | 1941 | | Sergeant on Sidewalk with Sgt. Collins (uncredited) |
| White Eagle | 1941 | | Kirk (uncredited) |
| Billy the Kid's Gun Justice | 1940 | | Henchman Bragg (as Ken Duncan) |
| Souls in Pawn | 1940 | | J.W. Carlton |
| The Green Archer | 1940 | | Michael Bellamy (uncredited) |
| Trailing Double Trouble | 1940 | | Bob Horner (as Ken Duncan) |
| Arizona Gang Busters | 1940 | | Sheriff Dan Kirk (as Kenneth Duncan) |
| Roll Wagons Roll | 1940 | | Captain Clay (as Kenneth Duncan) |
| Billy the Kid Outlawed | 1940 | | Dave Hendricks (as Ken Duncan) |
| Deadwood Dick | 1940 | | Henchman Two-Gun (Ch. 7) (uncredited) |
| Sky Bandits | 1940 | | Henchman Brownie (as Ken Duncan) |
| Frontier Crusader | 1940 | | The Mesa Kid (as Ken Duncan) |
| The Kid from Santa Fe | 1940 | | Joe Lavida |
| I Take This Oath | 1940 | | Car-Rental Clerk (uncredited) |
| Land of the Six Guns | 1940 | | Max (as Kenneth Duncan) |
| Pinto Canyon | 1940 | | Fred Jones (as Kenneth Duncan) |
| Covered Wagon Trails | 1940 | | Henchman Blaine (as Kenneth Duncan) |
| Murder on the Yukon | 1940 | | Henchman Tom (as Kenneth Duncan) |
| The Cheyenne Kid | 1940 | | Chet Adams (as Kenneth Duncan) |
| The Sagebrush Family Trails West | 1940 | | Bart Wallace |
| Texas Renegades | 1940 | | Bill Willis (as Kenneth Duncan) |
| Emergency Squad | 1940 | | Jack (uncredited) |
| Westbound Stage | 1939 | | Captain Jim Wallace (as Kenneth Duncan) |
| Flaming Lead | 1939 | | Ranch-Hand Larry (as Kenneth Duncan) |
| Trigger Fingers | 1939 | | Henchman Johnson (as Ken Duncan) |
| The Fighting Renegade | 1939 | | Henchman (uncredited) |
| Overland with Kit Carson | 1939 | | Trapper (uncredited) |
| Mickey the Kid | 1939 | | Henchman (uncredited) |
| The Man from Texas | 1939 | | Speed Dennison (as Kenneth Duncan) |
| Buck Rogers | 1939 | | Lieutenant Lacy (as Kenneth Duncan) |
| North of the Yukon | 1939 | | Henchman Meeker (as Kenneth Duncan) |
| Fighting Thoroughbreds | 1939 | | Brady (as Kenneth Duncan) |
| The Spider's Web | 1938 | | Ram Singh (as Kenneth Duncan) |
| Frontier Scout | 1938 | | Crandall - Henchman (as Kenneth Duncan) |
| The Great Adventures of Wild Bill Hickok | 1938 | | Blacksmith (Ch.13) (uncredited) |
| Flash Gordon's Trip to Mars | 1938 | | Airdrome Captain (as Kenneth Duncan) |
| Colorado Kid | 1937 | | Henchman Leathers (as Kenneth Duncan) |
| The Last Curtain | 1937 | | Joe Garsatti (as Kenneth Duncan) |
| Make-Up | 1937 | | Lorenzo (as Kenneth Duncan) |
| Cross My Heart | 1937 | | Steve King (as Kenneth Duncan) |
| Superman vs. the Gorilla Gang | 1965 | Short | Gorilla Gang Member |
| From Nine to Nine | 1936 | | John Sommerset (as Kenneth Duncan) |
| Like Wow! | 1962 | | Car salesman |
| Thoroughbred | 1935 | | Chick Williams (as Kenneth Duncan) |
| The Sinister Urge | 1960 | | Lt. Matt Carson |
| Gallant Defender | 1935 | | Goose Neck Smith (uncredited) |
| Natchez Trace | 1960 | | William Murrell (as Kenny Duncan) |
| Undercover Men | 1934 | | Blake Hardy (as Kenneth Duncan) |
| The Music Box Kid | 1960 | | Truck Driver's Helper (uncredited) |
| Shadow River | 1933 | | |
| Oklahoma Territory | 1960 | | Bigelow Henchman (uncredited) |
| The Mouthpiece | 1932 | | Office Worker (uncredited) |
| Rawhide | 1960 | TV Series | Sheriff Brown |
| Probation | 1932 | | Wedding Rehearsal Attendant (uncredited) |
| Night of the Ghouls | 1959 | | Dr. Acula |
| Lovers Courageous | 1932 | | Cowboy (uncredited) |
| Revenge of the Virgins | 1959 | | Narrator (voice, uncredited) |
| Grief Street | 1931 | | Newspaper Reporter (uncredited) |
| Date with Death | 1959 | | Andrews - freight-train watchman |
| No Limit | 1931 | | Curly Andrews |
| Bronco | 1959 | TV Series | Ab |
| Derelict | 1930 | | Radio Man (uncredited) |
| Bat Masterson | 1958 | TV Series | Newspaper Reporter |
| A Man from Wyoming | 1930 | | Haley (uncredited) |
| The Life and Legend of Wyatt Earp | 1955-1958 | TV Series | Caldwell / Kendall / Duecey Miller / ... |
| The Secret Outlaw | 1928 | Short as Kenneth Duncan | |
| Tombstone Territory | 1958 | TV Series | Bartender |
| Saps and Saddles | 1928 | Short as Kenneth Duncan | |
| Cheyenne | 1958 | TV Series | Lynch Mob Head |
| Police Reporter | 1928 | as Kenneth Duncan | |
| The Parson and the Outlaw | 1957 | | Matt McCloud (uncredited) |
| Almost Human | 1927/II | Short | Clint Scollard (as Ken Duncan) |
| Outlaw Queen | 1957 | | Sheriff |
| The Iron Sheriff | 1957 | | Leveret's Brother-in-Law (uncredited) |
| Revolt at Fort Laramie | 1957 | | Captain Foley (uncredited) |
| The Astounding She-Monster | 1957 | | Nat Burdell |
| Death Valley Days | 1953-1956 | TV Series | McConnell / Bartender / Nevada Secretary of State / ... |
| Sergeant Preston of the Yukon | 1955-1956 | TV Series | Ram Stevens / Sam / Pete Pringle |
| Annie Oakley | 1954-1956 | TV Series | Frank / Rick / Henchman Simpson / ... |
| Circus Boy | 1956 | TV Series | Barlow |
| Flesh and the Spur | 1956 | | Kale Tanner |
| Adventures of Wild Bill Hickok | 1951-1956 | TV Series | Pete / Gus / Ben / ... |
| Blazing the Overland Trail | 1956 | | Outlaw (uncredited) |
| My Friend Flicka | 1956 | TV Series | |
| Sky King | 1956 | TV Series | Matt / Murdock |
| The Adventures of Champion | 1955 | TV Series | Craig / Brice |
| The Gene Autry Show | 1950-1955 | TV Series | Sheriff Tim McBride / Sheriff / Thatcher Bowden / ... |
| Hell's Horizon | 1955 | | Maj. Naylor |
| Tales of the Texas Rangers | 1955 | TV Series | Norm |
| Buffalo Bill, Jr. | 1955 | TV Series | Hugh Clemens / Mike West |
| The Adventures of Kit Carson | 1952-1954 | TV Series | Major Talbot / Colonel / Monte Merringer - Henchman / ... |
| The Lawless Rider | 1954 | | Freno Frost |
| Crossroad Avenger: The Adventures of the Tucson Kid | 1953 | TV Short | Lefty |
| Pack Train | 1953 | | Ross McLain |
| Jack McCall, Desperado | 1953 | | Gang Member at Party (uncredited) |
| On Top of Old Smoky | 1953 | | Mcquaid |
| The Lone Ranger | 1950-1953 | TV Series | Sheriff Dunn / Joe Parker / Jeff Barnes |
| The Frontier Phantom | 1952 | | Sam Mantell (as Kenne Duncun) |
| Indian Uprising | 1952 | | Lieutenant Richards (uncredited) |
| The Range Rider | 1951-1952 | TV Series | Henchman Clem / Mort Brown / Lawyer John Barton / ... |
| The Hills of Utah | 1951 | | Henchman Indigo Hubbard |
| Drums in the Deep South | 1951 | | Union Officer (uncredited) |
| Oklahoma Justice | 1951 | | Sheriff Barnes |
| Silver Canyon | 1951 | | Corporal (uncredited) |
| The Texas Rangers | 1951 | | Outlaw Bart Howard (uncredited) |
| Nevada Badmen | 1951 | | Bob Bannon (uncredited) |
| Whirlwind | 1951 | | Henchman Slim (uncredited) |
| Badman's Gold | 1951 | | Rance |
ncG1vNJzZmimlanEsL7Toaeoq6RjvLOzjqecrWWnpL%2B1tI6knKemlWKxtrrCmqVmppWperi70a2faA%3D%3D