| 2013 | The Trail of Dracula | Self |
| 2013 | Blood of 1000 Virgins | Self (archive footage) |
| 2012 | The Complete Bob Wilkins Creature Features | — |
| 2003 | Boogeyman II: Redux | Dr. Warren |
| 1995 | Svengoolie (serie) | Dracula |
| 1989 | Emparedada | Jacob Julian |
| 1986 | El misterio de la pirámide | Andoheb |
| 1986 | Haunted Hollywood (serie) | Host |
| 1985 | Demonios de la noche | Dr. Kozmar |
| 1985 | Más allá de los límites de la realidad (serie) | (segment "Still Life") |
| 1984 | Elvira's MTV Halloween Party | — |
| 1984 | Guerreros del espacio | Supreme Commander |
| 1983 | Imps* | Gentleman |
| 1983 | A Rose for Emily | Col. Sartoris |
| 1983 | La casa de las sombras del pasado | Elijah Grisbane |
| 1983 | The Horror of It All | Self |
| 1983 | Antony and Cleopatra | Soothsayer |
| 1982 | Las chicas del valle | Mr. Stanton (Head of the Orphanage) |
| 1982 | Satan's Mistress | Father Stratten |
| 1982 | The Best of Sex and Violence | Self - Host |
| 1982 | Fama (serie) | — |
| 1981 | Goliath está esperando (serie) | Ronald Bentley |
| 1981 | El club de los monstruos | R.Chetwynd-Hayes, Writer |
| 1981 | Aullidos | Erle Kenton |
| 1980 | Satanás, el reflejo del mal (Boogeyman) | Dr. Warren |
| 1980 | Monstroid | Priest |
| 1980 | A Tribute to Dr. Shock | Self (archive footage) |
| 1979 | The Seekers | Avery Mills |
| 1979 | La guerra de los misiles | Professor Nikolaeff |
| 1978 | Flying High (serie) | — |
| 1978 | Vampire Hookers | Richmond Reed |
| 1978 | Sunset Cove | Judge Harley Winslow |
| 1978 | Doctor Dracula | Radcliff |
| 1978 | Salem and the Scarlet Letter | Narrator |
| 1977 | Christmas Miracle in Caufield, U.S.A. | Grampa Sullivan |
| 1977 | Fantástica aventura | The Tramp (voice) |
| 1977 | Ondas de choque | Captain |
| 1977 | Satan's Cheerleaders | The Bum |
| 1977 | La centinela | Fr. Francis Matthew Halloran |
| 1977 | The Lady and the Lynchings | — |
| 1976 | Capitanes y reyes (serie) | Father Hale |
| 1976 | El sepulcro de Lorna Love | Conan Carroll |
| 1975 | Reise ins Jenseits - Die Welt des Übernatürlichen | Narrator (English Version) |
| 1975 | La mujer maravilla (serie) | Harlow Gault |
| 1975 | Starsky y Hutch (serie) | The Professor |
| 1975 | Mary, Mary, Bloody Mary | The Man |
| 1975 | Stowaway to the Moon | Jacob Avril |
| 1974 | The Lady's Not for Burning | Old Skips |
| 1974 | Moonchild | Mr. Walker |
| 1974 | The Horror Hall of Fame: A Monster Salute | Self |
| 1974 | The Cowboys (serie) | Oscar Schmidt |
| 1974 | La maldición de los 7 cadáveres | Edgar Price |
| 1973 | The Cat Creature | The Hotel Clerk |
| 1973 | Shadow House | Uncle |
| 1973 | Superchick | Igor Smith |
| 1973 | 1,000,000 A.D. Promo Reel | The Sage |
| 1973 | Bad Charleston Charlie | Alcoholic Reporter |
| 1973 | Terror en el Museo de Cera | Claude Dupree |
| 1972 | Noche silenciosa, noche sangrienta | Charlie Towman |
| 1972 | The Rookies (serie) | — |
| 1972 | Todo lo que siempre quiso saber sobre el sexo y nunca se atrevió a preguntar | Dr. Bernardo |
| 1972 | Richard | Plastic Surgeon |
| 1972 | El tren de Bertha | H. Buckram Sartoris |
| 1972 | Emergency! (serie) | — |
| 1971 | Decisions! Decisions! | Railroad Ticket Clerk |
| 1971 | The Seven Minutes | Sean O'Flanagan |
| 1971 | Legado sangriento | Christopher Dean |
| 1971 | Demented Death Farm Massacre | The Judge Of Hell |
| 1970 | Galería nocturna (Night Gallery) (serie) | — |
| 1970 | La granja maldita | Nate Cheever |
| 1970 | Shinbone Alley | Tyrone T. Tattersall |
| 1970 | Hell's Bloody Devils | Pet Shop Owner |
| 1970 | Los McMasters | Preacher |
| 1970 | Blood of the Iron Maiden | Dr. Goolie |
| 1970 | El camino de Cain | Preacher Simms |
| 1970 | McCloud (serie) | — |
| 1970 | Monstruos Hambrientos | Dr. Rynning |
| 1969 | La señora Muerte | Dr. Favel |
| 1969 | Enigma de muerte | Mad Doctor / Nazi Leader |
| 1969 | Cinco tumbas sangrientas | Boone Hawkins |
| 1969 | Blood of Dracula's Castle | George |
| 1969 | Love, American Style (serie) | Old George Pomerantz |
| 1969 | Mis problemas con las mujeres | Mr. Drewcolt |
| 1969 | Pacto Diabólico | Dr. Halback |
| 1969 | The Mummy and the Curse of the Jackals | Professor Cummings |
| 1968 | Autopsia de un fantasma | Satán |
| 1968 | Tierra de gigantes (serie) | Egor Crull |
| 1968 | The Dick Cavett Show (serie) | Invitado especial |
| 1968 | The Astro-Zombies | Dr. DeMarco |
| 1968 | They Ran for Their Lives | Laslo |
| 1968 | Los chicles | — |
| 1968 | Los chicles | Old Man |
| 1967 | Hondo (serie) | — |
| 1967 | Hillbillys in a Haunted House | Dr. Himmel |
| 1967 | Ironside (serie) | — |
| 1967 | Gallery of Horror | Narrator / Tristram Halbin |
| 1966 | Red Zone Cuba | Mr. Wilson |
| 1966 | The Girl from U.N.C.L.E. (serie) | — |
| 1966 | El avispón verde (serie) | James Rancourt / The Scarf |
| 1966 | Billy the Kid Versus Dracula | Count Dracula |
| 1966 | Doom of Dracula | Count Dracula |
| 1965 | Perdidos en el espacio (serie) | Arcon |
| 1965 | The Big Valley (serie) | Elias Brown |
| 1965 | The Legend of Jesse James (serie) | Noah |
| 1965 | Broken Sabre | General Josh McCord |
| 1965 | La maldición de la mano de piedra | The Old Drunk |
| 1965 | Branded (serie) | — |
| 1965 | El Mago de Marte | The Wizard of Mars |
| 1965 | La casa de la muerte negra | Andre Desard |
| 1964 | Daniel Boone (serie) | Zack Pike |
| 1964 | La familia Monster (serie) | — |
| 1964 | Jerry Calamidad | Bruce Alden |
| 1962 | The Lucy Show (serie) | Guzman |
| 1962 | Los nuevos ricos (serie) | — |
| 1962 | La hora de Alfred Hitchcock (serie) | Gavin Revere |
| 1960 | Thriller (serie) | Jason Longfellow |
| 1960 | Tarzán el justiciero | Abel Banton |
| 1959 | The Incredible Petrified World | Prof. Millard Wyman |
| 1959 | Bourbon Street Beat (serie) | — |
| 1959 | The Rebel (serie) | Elmer Dodson |
| 1959 | La dimensión desconocida (serie) | Brother Jerome |
| 1959 | Johnny Ringo (serie) | The Rain Man |
| 1959 | Lock-Up (serie) | — |
| 1959 | El camino de Oregón | Zachariah Garrison |
| 1959 | Invasion of the Animal People | Narrator (US Re-Edit) |
| 1959 | Invasores invisibles | Dr. Karol Noymann |
| 1959 | El hombre fantasma | Cosmic Man |
| 1958 | Half Human: The Story of the Abominable Snowman | Dr. John Rayburn |
| 1958 | 77 Sunset Strip (serie) | — |
| 1958 | Bat Masterson (serie) | Sheriff Vince Morgan |
| 1958 | El hombre del rifle (serie) | — |
| 1958 | Randall, el justiciero (serie) | Amos McKenna |
| 1958 | La Raya de la Muerte | Doc Weber |
| 1957 | Hell Ship Mutiny | Malone |
| 1957 | Las cuatro en punto (serie) | Raphael |
| 1957 | DuPont Show of the Month (serie) | John Canty |
| 1957 | Maverick (serie) | — |
| 1957 | Wagon Train (serie) | Park Cleatus |
| 1957 | Sugarfoot (serie) | Mathew McDavitt |
| 1957 | Have Gun, Will Travel (serie) | — |
| 1957 | Terror en la clínica | Dr. Charles Conway |
| 1957 | La Verdadera Historia De Jesse James | Rev. Jethro Bailey |
| 1956 | Dracula | Dracula |
| 1956 | The Adventures of Dr. Fu Manchu (serie) | — |
| 1956 | La resaca | Claude Almstead |
| 1956 | Telephone Time (serie) | — |
| 1956 | Dark Venture | Gideon |
| 1956 | Hidden Guns | Snipe Harding |
| 1955 | Desert Sands | Jala |
| 1955 | Matinee Theater (serie) | — |
| 1955 | Navy Log (serie) | — |
| 1955 | Cheyenne (serie) | — |
| 1955 | Gunsmoke (serie) | Ephraim Hunt |
| 1955 | The Life and Legend of Wyatt Earp (serie) | — |
| 1955 | La ley del juez Thorne | Col. Buck Streeter |
| 1955 | The Millionaire (serie) | Karl Miller AKA Count Karl Millevich |
| 1954 | Climax! (serie) | John Evan |
| 1954 | Studio 57 (serie) | — |
| 1954 | Thunder Pass | Bergstrom |
| 1954 | Johnny Guitar | Old Tom |
| 1954 | La gran noche de Casanova | Foressi |
| 1951 | Schlitz Playhouse of Stars (serie) | — |
| 1951 | The Adventures of Wild Bill Hickok (serie) | — |
| 1949 | Lights Out (serie) | — |
| 1949 | C-Man | Doc Spencer |
| 1949 | Suspense (serie) | — |
| 1948 | Studio One (serie) | Mr. Wadleigh |
| 1948 | The Philco Television Playhouse (serie) | Malvolio |
| 1948 | The Ed Sullivan Show (serie) | Self |
| 1947 | La vida privada de Bel Ami | Charles Forestier |
| 1946 | Down Missouri Way | Thorndyke 'Thorny' P. Dunning |
| 1946 | The Face of Marble | Dr. Charles Randolph |
| 1945 | La mansión de Drácula | Count Dracula |
| 1945 | El capitán Kidd | Orange Povey |
| 1945 | ¿Ángel o diablo? | Professor Madley |
| 1944 | La zíngara y los monstruos (La mansión de Frankenstein) | Dracula (aka Baron Latos) |
| 1944 | Barbary Coast Gent | Duke Cleat |
| 1944 | The Adventures of Mark Twain | Bret Harte |
| 1944 | Return of the Ape Man | Prof. John Gilmore |
| 1944 | El fantasma de la momia | Yousef Bey |
| 1944 | La venganza del hombre invisible | Dr. Peter Drury |
| 1944 | The Black Parachute | General von Bodenbach |
| 1944 | Voodoo Man | Toby |
| 1943 | Pasaje al futuro | Mr. Wellington |
| 1943 | Revenge of the Zombies | Dr. Max Heinrich von Altermann |
| 1943 | Isle of Forgotten Sins | Mike Clancy |
| 1943 | Silver Spurs | Lucky Miller |
| 1943 | Hitler's Madman | Reinhardt Heydrich |
| 1943 | Captive Wild Woman | Dr. Sigmund Walters |
| 1943 | I Escaped from the Gestapo | Martin |
| 1942 | Reunión en Francia | Ulrich Windler |
| 1942 | Northwest Rangers | Martin Caswell |
| 1942 | Whispering Ghosts | Norbert |
| 1942 | El hijo de la furia | Caleb Green |
| 1941 | Aguas pantanosas | Jesse Wick |
| 1941 | El hombre atrapado | Mr. Jones |
| 1941 | Espíritu de conquista | Doc Murdoch |
| 1940 | Pasión de amazona | B. D. Bisbee |
| 1940 | El hombre de la frontera | Porter Rockwell |
| 1940 | La venganza de Frank James | Bob Ford |
| 1940 | Las uvas de la ira | Casy |
| 1939 | Corazones indomables | Caldwell |
| 1939 | Frontier Marshal | Ben Carter |
| 1939 | Five Came Back | Mr. Crimp |
| 1939 | Captain Fury | Coughy |
| 1939 | El perro de los Baskerville | Barryman |
| 1939 | La diligencia | Hatfield |
| 1939 | Mr. Moto's Last Warning | Danforth / Richard Burke |
| 1938 | Gateway | Leader of Refugees |
| 1938 | I'll Give a Million | Kopelpeck |
| 1938 | Kidnapped | Gordon |
| 1938 | Kentucky Moonshine | Reef Hatfield |
| 1938 | Ingratitud | President Lincoln |
| 1938 | International Settlement | Murdock |
| 1937 | Thank You, Mr. Moto | Pereira |
| 1937 | Huracán sobre la isla | Warden |
| 1937 | Ali Baba Goes to Town | Ishak |
| 1937 | Amor en la oficina | Herbert Pemberton |
| 1937 | Love Under Fire | Capt. Delmar |
| 1937 | Capitanes intrépidos | Long Jack |
| 1937 | La contraseña | Ed |
| 1937 | Nancy Steele Is Missing! | Harry Wilkins |
| 1936 | Laughing at Trouble | Deputy Sheriff Alec Brady |
| 1936 | Winterset | Bartolomio Romagna |
| 1936 | Daniel Boone | Simon Girty |
| 1936 | El jardín de Alá | Sand Diviner |
| 1936 | María Estuardo | Rizzio |
| 1936 | White Fang | Beauty Smith |
| 1934 | The Meanest Gal in Town | Stranded Actor (uncredited) |
