The Wild Wild West
1965 · Series
Invitation to a Gunfighter
1964 · Manuel
Nightmare in Chicago
1964 · Officer Miller
Kraft Suspense Theatre
1963 · Series · Officer Miller
The Alfred Hitchcock Hour
1962 · Series · The Intern
Combat!
1962 · Series · Bialos
The Gallant Men
1962 · Series
Terror At Black Falls
1962 · Carlos Avila (as John Alonzo)
Hand of Death
1962 · Carlos, lab assistant
Susan Slade
1961 · Engineer
The Long Rope
1961 · Manuel Alvarez (as John Alonzo)
The Magnificent Seven
1960 · Miguel
The Crowded Sky
1960 · Young Repairman
The Twilight Zone
1959 · Series · Luís Gallegos
77 Sunset Strip
1958 · Series
The Gun Runners
1958 · Soldier in Car (uncredited)
Perry Mason
1957 · Series · Pedro Guitterez
