Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Played Detective Sal Benedetto in the 1983 season. The character committed suicide but turned out to be so popular that they brought Franz back in the 1985 season to play Detective Norm Buntz, who was essentially the same character. Buntz was popular enough that Franz got a spin-off series playing him when Hill Street Blues ended. And when that series ended, he was cast as Detective Andy Sipowicz on NYPD Blue, which was again essentially the same character.
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues - Detective Sal Benedetto & Detective Norm Buntz
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned in 2006 as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
Played a car thief in one episode; later played Officer Bonnie Clark for a few seasons
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Peter Capaldi, Caecilius in “Fires of Pompeii” and the Twelfth Doctor, Doctor Who
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Peter Capaldi, Caecilius in “Fires of Pompeii” and the Twelfth Doctor, Doctor Who
Karen Gillian, Soothsayer in “Fires of Pompeii” and Amy Pond, season 5, 6, and half of 7: Doctor Who
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Peter Capaldi, Caecilius in “Fires of Pompeii” and the Twelfth Doctor, Doctor Who
Karen Gillian, Soothsayer in “Fires of Pompeii” and Amy Pond, season 5, 6, and half of 7: Doctor Who
Merrin Dungey who played Malcolm’s classroom teacher in the first episode of Malcolm in the Middle, and also played Kitty, Stevie’s mother, as a recurring role later in the series.
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Peter Capaldi, Caecilius in “Fires of Pompeii” and the Twelfth Doctor, Doctor Who
Karen Gillian, Soothsayer in “Fires of Pompeii” and Amy Pond, season 5, 6, and half of 7: Doctor Who
Merrin Dungey who played Malcolm’s classroom teacher in the first episode of Malcolm in the Middle, and also played Kitty, Stevie’s mother, as a recurring role later in the series.
Harry Morgan on*** MASH**- long before he became a co-star, as Sherman Potter, he appeared in one episode as the loony General Steel, a guy with a tendency to break into song for no reason
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Peter Capaldi, Caecilius in “Fires of Pompeii” and the Twelfth Doctor, Doctor Who
Karen Gillian, Soothsayer in “Fires of Pompeii” and Amy Pond, season 5, 6, and half of 7: Doctor Who
Merrin Dungey who played Malcolm’s classroom teacher in the first episode of Malcolm in the Middle, and also played Kitty, Stevie’s mother, as a recurring role later in the series.
Harry Morgan on MAS*H- long before he became a co-star, as Sherman Potter, he appeared in one episode as the loony General Steel, a guy with a tendency to break into song for no reason
Lawrence Pressman on Star Trek: Deep Space Nine - Legate Ghemor and a Changeling (impersonating a third person, Amb. Krajensky)!
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Peter Capaldi, Caecilius in “Fires of Pompeii” and the Twelfth Doctor, Doctor Who
Karen Gillian, Soothsayer in “Fires of Pompeii” and Amy Pond, season 5, 6, and half of 7: Doctor Who
Merrin Dungey who played Malcolm’s classroom teacher in the first episode of Malcolm in the Middle, and also played Kitty, Stevie’s mother, as a recurring role later in the series.
Harry Morgan on MAS*H- long before he became a co-star, as Sherman Potter, he appeared in one episode as the loony General Steel, a guy with a tendency to break into song for no reason
Lawrence Pressman on Star Trek: Deep Space Nine - Legate Ghemor and a Changeling (impersonating a third person, Amb. Krajensky)!
Character actor Richard Stahl appeared on a bunch of episodes of The Odd Couple, all in different roles. He was a monk who recruited Felix and Oscar to join a monastery in one, he was a pet shop owner who sold Felix a frog in another, he was a doctor in another, a justice of the peace at a wedding in another.
Actors/Actresses who’ve played two or more unrelated roles on the same TV series (list roles and series)
Mark Lenard (Sarek in “Journey to Babel” and Romulan Commander in “Balance of Terror”), Star Trek TOS
Colin Baker (Commander Maxil in “Arc of Infinity” and then the sixth Doctor), Doctor Who
Dennis Franz on Hill Street Blues.
Courtney B. Vance - Mayor’s Assistant (1990) and Benjamin ‘Bud’ Greer (1995), Law & Order, then he returned as Assistant District Attorney Ron Carver on Law and Order : Criminal Intent.
Randi Oakes on CHiPs
The incredible Phillips Tead, who played Mr. Willy on one episode of The Adventures of Superman, and then went on to play recurring character Prof. Pepperwinkle.
Peter Capaldi, Caecilius in “Fires of Pompeii” and the Twelfth Doctor, Doctor Who
Karen Gillian, Soothsayer in “Fires of Pompeii” and Amy Pond, season 5, 6, and half of 7: Doctor Who
Merrin Dungey who played Malcolm’s classroom teacher in the first episode of Malcolm in the Middle, and also played Kitty, Stevie’s mother, as a recurring role later in the series.
Harry Morgan on MAS*H- long before he became a co-star, as Sherman Potter, he appeared in one episode as the loony General Steel, a guy with a tendency to break into song for no reason
Lawrence Pressman on Star Trek: Deep Space Nine - Legate Ghemor and a Changeling (impersonating a third person, Amb. Krajensky)!
Character actor Richard Stahl appeared on a bunch of episodes of The Odd Couple, all in different roles. He was a monk who recruited Felix and Oscar to join a monastery in one, he was a pet shop owner who sold Felix a frog in another, he was a doctor in another, a justice of the peace at a wedding in another.