- Pat Paulsen - Bosley Cranston
- Sharon Acker - Lavinia Sedgewick
- Tol Avery - Asa Dempster
- Beverly Garland - Celia Rydell
- Lisa Gaye - Lana Benson
- Jim Backus - Fabian Swanson
- Robert Middleton - Emir El Emid
- Phyllis Newman - Wanakee
- Francine York - Dr. Sara Gibson
- George Murdock - Luther Coyle
- Jo Van Fleet - Amelia Bronston
- Suzanne Pleshette - Lydia Monteran
- J. Pat O'Malley - Brother Angelo
- Lynn Carey - the Imposter
- Don Beddoe - Prof. Robey
- Susan Oliver - Triste
- Hurd Hatfield - Liston Day
- Carroll O'Connor - Fabian Lavendor
- Dianne Foster - Amanda Vautrain
- Victor Sen Yung - Baron Kyosai
- Arthur Malet - Doc Keyno
- Byron Morrow - Majordomo
- Anthony Caruso - Aguila
- John Williams - Sir Nigel Scott
- Jean Hale - Marie Pincher
- Susan Browning - Nurse
- Kurt Kreuger - Heindorf
- William Talman - Sheriff
- Ted Knight - Daniel
- Alfred Ryder - Captain Philo
- Booth Colman - Xavier Perkins
- Don Rickles - Asmodeus
- Joseph Ruskin - Munez
- Jackie Coogan - Mayor Cecil Pudney
- Jason Evers - Commander Beech
- Michael Dunn - Dr. Loveless
- Michael Dunn - Dr. Miguelito Loveless
- Arthur Batanides - Marius
- Richard Jaeckel - Christopher Cable
- Robert Duvall - Dr. Horace Humphries
- Marj Dusay - Crystal Fair
- Marj Dusay - Dolores Hammond
- Ford Rainey - Admiral Hammond
- Peter Mark Richman - Prince Gio
- Danica D'Hondt - Roxanne
- Edward Knight - General Lassiter
- William Phipps - Marshall
- Helen Funai - Japanese Maiden
- Joan Delaney - Mariah Eddington
- Ann Elder - Astarte
- Christopher Cary - Tycho
- Christopher Cary - Snakes Tolliver
- Diane McBain - Jennifer Wingate
- Diane McBain - Elaine Dodd
- Florence Sundstrom - Mrs. Moore
- Chanin Hale - Flo
- Al Bain - Townsman (uncredited)
- Pat O'Hara - Jarvis
- Pamela Austin - Priscilla Ames
- Anthony Larry Paul - Detective
- Walter Soo Hoo - Hatchetman (uncredited)
- Shawn Michaels - Convict Painter
- Judy Lang - Abigail Pringle
- Nelson Welch - Prof. McClennon
- Nacho Galindo - Pepe
- Kai Hernandez - The Maid
- Sandra Smith - Nadine Conover
- Marya Thomas - Chinese Girl (as Marya Christen)
- Charles Aidman - Jeremy Pike
- Frank Silvera - El Sordo
- James Almanzar - Gregorio
- Mario Alcalde - Capt. Fortuna
- Warren Parker - The Engineer
- Alberto Morin - The Majordomo
- Marianna Hill - Belladonna
- Alan Hale Jr. - Ned Brown
- Ted de Corsia - Johnny Sabatini
- Harry Harvey - Theater Manager
- Agnes Moorehead - Emma Valentine
- Henry Beckman - Paul J. Lambert
- Don 'Red' Barry - Farnsworth
- Don 'Red' Barry - Rainey
- Don Dillaway - Griffin the Butler
- Dale Van Sickel - Guitar Playing Assailant (uncredited)
- Don Diamond - The Bartender
- Shari Nims - Jeanne
- William Schallert - Rufus Kraus
- William Schallert - Silas Grigsby
- William Schallert - Frank Harper
- Norman Fell - Jeremiah Ratch
- Sam Flint - Clerk
- Richard Reeves - Bailey
- Douglas Henderson - Col. James Richmond
- Marie Gomez - Isabel
- Martin E. Brooks - Franklin Poore
- Sarah Marshall - Eugenia Rawlins
- Charles Lane - Roger Creed
- Hal Taggart - Townsman (uncredited)
- Yvonne Craig - Ecstasy La Joie
- Nehemiah Persoff - Major Hazard
- Bill Quinn - Dr. Prior
- William Challee - Fargo
- William Challee - Prisoner #1
- Leslie Nielsen - Major General Ball
- Susan Silo - Little Willow
- Lovyss Bradley - Townswoman (uncredited)
- Jackie Joseph - Girl Smooching with Renegade (uncredited)
- Sue Ane Langdon - Nina Gilbert
- Roy Engel - President Ulysses S. Grant
- Wolfe Barzell - Landgrave
- Lou Krugman - The Blind Beggar
- Lou Krugman - Maitre d'Hotel
- John Pickard - Amos Rawlins
- John Pickard - Ralph L. Gilbert
- John Pickard - Duty Sergeant
- Jonathan Hole - The Bank Manager
- Chubby Johnson - The Sheriff
- Peter Hale - Layden
- Lew Brown - Guard
- Ed Asner - Furman Crotty
- Sharon Farrell - Cloris Colton
- John Kellogg - Rusty
- Kevin Hagen - Silas Crotty
- John Alderson - Clive Marchmount
- John Dehner - Torres
- John Dehner - John Maxwell Avery
- George Keymas - Balya
- Lynn Wood - Woman
- Michele Tobin - Bonnie
- Michael Shea - Boy
- Warren Hammack - Soldier
- Almira Sessions - Old Lavinia (uncredited)
- Percy Rodriguez - Brutus
- H.M. Wynant - Little Pinto
- Victor Buono - Count Carlos Manzeppi
- Edward Binns - Colonel Roper
- Robert Pine - Lieutenant Murray
- Eugene Iglesias - Bernal
- Eugene Iglesias - Gallito
- Henry Wilcoxon - Armando Galiano
- William O'Connell - Dr. Winterich
- Ruta Lee - Laurie Morgan
- Len Lesser - Mason
- Dub Taylor - Guard
- Kent Smith - Governor Winston E. Brubaker
- Anthony Zerbe - Deke Montgomery
- Walter Brooke - Prosecutor
- Sherry Jackson - Michele LeMaster
- Sherry Jackson - Lola Cortez
- Bill Erwin - Jury Foreman
- Don Ross - Jury Member
- Donnelly Rhodes - Captain Dansby
- Donnelly Rhodes - Captain Zaboff
- Mary Frann - Princess Lina
- Bill Fletcher - Joe Stark
- Ross Hagen - Gabe Kelso
- Bo Hopkins - Zack Garrison
- Wayne Heffley - Deputy
- Madlyn Rhue - Carlotta Waters
- A.G. Vitanza - Pima
- Harold Gould - Victor Freemantle
- Harold Gould - John Taney
- Timothy Brown - Clint Cartwheel
- Robert Ellenstein - Dr. Raker
- Robert Ellenstein - Arthur Tickle
- Rudy Doucette - Club Patron (uncredited)
- Rudy Doucette - Driver (uncredited)
- Rudy Doucette - Henchman (uncredited)
- Rudy Doucette - Bandit (uncredited)
- Rudy Doucette - Sergeant (uncredited)
- Emily Banks - Arden Masterson
- Bob Herron - Party Guest (uncredited)
- Bob Herron - Henchman (uncredited)
- Bob Herron - Third-Fastest Gun (uncredited)
- Bob Herron - Soldier (uncredited)
- Bob Herron - Captain Jackson (uncredited)
- Bob Herron - Tigo
- Dick Cherney - Waiter (uncredited)
- Louis Quinn - Mr. Goff
- Charlie Picerni - Robber (uncredited)
- Charlie Picerni - Varlet (uncredited)
- Simon Oakland - Diamond Dave Desmond
- Susan Seaforth Hayes - Delilah
- Percy Helton - Proprietor
- Norman Leavitt - Sheriff Corby
- Norman Leavitt - Mayor Hiram Sneed
- Cliff Norton - Drummer
- Steve Raines - Sheriff
- Lana Wood - Sheila O'Shaugnessy
- Lana Wood - Averi Trent
- Bill Zuckert - Sheriff
- Paul Fix - Old Chief
- Paul Fix - Judge Blake
- David S. Cass Sr. - Olin
- Pernell Roberts - Sean O'Reilley
- Len Wayland - Major Jason
- Fred Stromsoe - Cossack (uncredited)
- Fred Stromsoe - Guard (uncredited)
- Fred Stromsoe - Supernumerary (uncredited)
- Fred Stromsoe - Cal
- Fred Stromsoe - Deputy (uncredited)
- Lynn Loring - Carma Vasquez
- John Doucette - Axel Morgan
- John Doucette - John Obediah Brown
- Chuck Courtney - Zack Brass
- Chuck Courtney - Cavalry Officer
- Phoebe Dorin - Antoinette
- Howard Hoffman - War Eagle
- Santy Josol - Chawtaw
- Noel Drayton - Museum Director
- Jorge Moreno - Barkeep
- George Petrie - Col. Petrie
- Jeff Corey - Col. Tacitus Mosely
- Jeff Corey - Captain Ansel Coffin
- Johnny Jensen - The Boy
- James Nolan - The Warden
- Gil Lamb - Claude
- Dorothy Neumann - Zenobia Finch
- Gregg Martell - Bartender #1
- Brent Davis - Lt. Dave Bartlett
- Claudio Miranda - Bartender #2
- Larry Grant - Aide
- Bill Baldwin - Workman
- Helen Page Camp - Charity
- Ken Drake - General Crocker
- Lee Kolima - No-Fun
- Gene Tyburn - Mark Chambers
- Gene Tyburn - Felton
- Gene Tyburn - Finley
- Jacquelyn Hyde - Marquesa Bellini
- Reggie Nalder - Count Zendar
- I. Stanford Jolley - Town Doctor
- Gregg Palmer - Bartender
- Astrid Warner - Gilda Novak
- Adolph Caesar - Vidoq
- Robert Patten - Dr. De Forest
- Barney Phillips - Captain Tenney
- Karen Sharpe - Rose Murphy
- Karen Sharpe - Barbara Bosley
- Ross Elliott - General Caswell
- Jenny Maxwell - Billie
- Steve Gravers - Durkin
- Sydney Smith - Tycoon
- Fritz Feld - Chef
- Sharon Cintron - Girl #1
- Barbara Hemingway - Fat Lady
- Bennett King - Fat Man #2
- Ray Dawe - Fat Man #4
- Khigh Dhiegh - Din Chang
- Vincent Beck - Corporal Simon
- Lou Cutell - Major Frederick Frey
- Andre Philippe - Jean-Paul
- Debbie Wong - Kuei
- Ellaraino - Amy Stafford
- Linda Lin Di Ho - Chinese Girl #2
- Buck Kartalian - Lieutenant Bengston
- Holly Mascott - Molly
- John Creamer - Col. Kelton Morse
- Ernest Harada - Chinese Man #1
- Stanley Kamel - Sargeant
- John Quade - Man
- Dirk Harvey - Guard #1
- Tommy Lee - Ancient Puppeteer
- Shirley Anthony - Restaurant Patron (uncredited)
- Oliver McGowan - Col. Armstrong
- Robert H. Harris - Steven Rydell
- Richard Erdman - Mordecai Krone
- James Westerfield - McAvity
- Jana Taylor - Alicia Crane
- Lorna Lewis - Helen Merritt
- Jon Lormer - Boatman
- Robert V. Barron - Servant #2
- Jack Perkins - Golo
- Nick Adams - Prince
- Robert Emhardt - Martin Grevely
- Robert Emhardt - Claude Duchamps
- Henry Darrow - Archduke Maurice
- Jeannine Riley - Aimee Baldwin
- Paul Sorensen - Maj. Lock
- Robert J. Wilke - Maj. Gen. Titus Ord Baldwin
- Richard H. Landau
- Leonard Katzman
- Philip Leacock
Robert Duvall interpreta a Dr. Horace Humphries en la serie.
Ted de Corsia interpreta a Johnny Sabatini en la serie.
Percy Helton interpreta a Proprietor en la serie.
Robert Ellenstein interpreta a Dr. Raker en la serie.
Nehemiah Persoff interpreta a Major Hazard en la serie.
Edward Binns interpreta a Colonel Roper en la serie.
Jim Backus interpreta a Fabian Swanson en la serie.
Anthony Zerbe hace el papel de Deke Montgomery.
Robert Conrad interpreta a James T. West en la serie.
Ross Martin interpreta a Artemus Gordon en la serie.
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