Richard Alexander was an American actor who worked in film and television for nearly 50 years.  Most of his roles were uncredited, but he appeared in numerous films, including "All Quiet on the Western Front" (1930), "Flash Gordon" (1936, 1938), "Zorro Rides Again" (1937) and "Requiem for a Gunfighter" (1965).  He also made numerous television appearances, frequently in Westerns, including "The Lone Ranger" (1950–1953), "The Gene Autry Show" (1950), "Dick Tracy (1950), "Hopalong Cassidy" (1952), "Death Valley Days" (1952) and his final role in "Petrocelli" (1971).

Alexander appeared in four episodes of THE RIFLEMAN and was one of seven actors to play Nels/Nils Swenson/Swensen/Svenson, usually also listed in the credits as the Blacksmith.  He appeared in "The Deserter" (episode 65), "Smoke Screen" (episode 68), "Meeting at Midnight" (episode 74) and "The Martinet" (episode 83).

Don Dubbins, born Donald George Dubbins, was an American film and television actor.  He appeared in more than 100 movies and television shows in a career spanning nearly 40 years.  He guest-starred in numerous popular shows, including the anthology horror series "Alfred Hitchcock Presents" (1955–1962); the crime drama "M Squad" (1957–1960), starring Lee Marvin as Lieutenant Frank Ballinger; Rod Serling's sci-fi anthology series "Twilight Zone" (1959–1964); the crime "Perry Mason" (1957–1966), drama "77 Sunset Strip" (1958–1964), starring Efren Zimbalist, Jr.; the courtroom crime drama starring Raymond Burr ; the adventure series "The Fugitive" (1963–1967), starring David Janssen as a wrongly convicted doctor on the run.  Dubbins also crossed over into comedy, appearing int the popular fantasy sitcom "I Dream of Jeannie" (1965–1970), starring Barbara Eden, Larry Hagman and Bill Daly; the action-adventure western "Kung Fu" (1972–1975), starring David Carradine as a Shaolin monk; Aaron Spelling's "Fantasy Island" (1977–1984), starring Ricardo Montalban as Mr. Roarke; the family western drama "Little House on the Prairie" (1974–1983), starring Melissa Gilbert as Laura Ingalls; and the whodunit mystery series "Murder, She Wrote" (1984–1996), starring Angela Lansbury as Jessica Fletcher.

Dubbins appeared in several films, including the western "Tribute to a Bad Man" (1956), in which he had a starring role alongside James Cagney; the drama "The D.I." (1957), in which he had a starring role as Private Owens; the crime drama "The Prize" (1963), in which he portrayed Ivar Cramer and starred Paul Newman as Andrew Craig; and the classic sci-fi film based on the book of the same name by Ray Bradbury, "The Illustrated Man" (1969), in which he played the role of Pickard and starred Rod Steiger.

Dubbins made one guest appearance in THE RIFLEMAN, portraying Ben Perry in "The Martinet" (episode 83).  He guest-starred in several other westerns, including "Rawhide" (1959–1966), starring Clint Eastwood, "Wanted: Dead or Alive" (1958–1961), starring Steve McQueen, "Bonanza" (1959–1973), "Gunsmoke" (1955–1975), starring James Arness, and "The Virginian" (1962–1971).

John Hoyt, born John McArthur Hoysradt, was an American stage, film and television actor.  He appeared in nearly 240 movies and television shows during a career spanning 40 years.  A Yale graduate, Hoyt worked as a history instructor, acting coach and nightclub comedian prior to devoting himself to acting full-time.  In 1937, he joined the Orson Welles Mercury Theatre.  He had roles in several memorable films, including Spencer in the drama "Brute Force" (1947), starring Burt Lancaster and Hume Cronyn; Decius Caesar in the historical drama "Julius Caesar" (1953), starring Louis Calhern, Marlon Brando, James Mason and John Gielgud; Caius in Stanley Kubrick's film adaptation of "Spartacus" (1960), starring Kirk Douglas, Laurence Olivier and Jean Simmons; and the space commander in the romantic comedy "Desperately Seeking Susan" (1985), starring Rosanna Arquette, Aidan Quinn and Madonna.

Hoyt guest-starred in many popular television shows, including the undercover police drama "M Squad" (1957–1960), the anthology series "Playhouse 90" (1956–1960), the Disney adventure series "Zorro" (1957–1959), the classic family comedy "Leave It to Beaver" (1957–1963), the suspense anthology series "Alfred Hitchcock Presents" (1955–1962), the crime drama "The Untouchables" (1959–1963), Rod Serling's iconic anthology series "The Twilight Zone" (1959–1964), the legal drama "Perry Mason" (1957–1966), the crime drama "Arrest and Trial" (1963–1964), the medical drama "Dr. Kildare" (1961–1966), the espionage series "I Spy" (1965–1968), the sci-fi cult classic "Star Trek" (1966–1969), the adventure drama "It Takes a Thief" (1968–1970) and the sci-fi adventure series "Battlestar Galactica" (1978–1979).

Hoyt made two appearances in THE RIFLEMAN, portraying Fremont in "Three-Legged Terror" (episode 30) and Capt. Josiah Perry in "The Martinet" (episode 83).  He guest-starred in many other westerns, including "The Deputy" (1959–1961), starring Henry Fonda; "Death Valley Days" (1952–1975), hosted by Robert Taylor; "Rawhide" (1959–1966), starring Clint Eastwood; "Gunsmoke" (1955–1975), starring James Arness; "Wagon Train" (1957–1965), starring John McIntyre and Ward Bond; "Bonanza" (1959–1973), starring Lorne Greene, Michael Landon, Dan Blocker and Pernell Roberts; and "The Big Valley" (1965–1969), starring Barbara Stanwyck.