Author’s note: I first wrote up this wee bit of allohistorical silliness in March of this year, posting it a few places online, but never actually bothered on my own website until now. Enjoy.

• Doctor Who?, on CBS
  • 1963–1966: Vincent Price (Doctor Who)
    First episode: “The Girl from Another World”
    Last episode: “Planet of the Daleks”
  • 1966–1967: Jack Nicholson (Doctor Who, Theta Sigma)
    First episode: “Planet of the Daleks”
• Doctor Who and the Daleks, on CBS
  • 1967–1972: Jack Nicholson (Doctor Who, Theta Sigma)
    Last episode: “The Paradox Web”
• Doctor Who: Alien Agent, on CBS
  • 1973–1975: David McCallum (Agent John Smith / Doctor Who, Theta Tau)
    First episode: “The Mannequin Men”
    Last episode: “Doctor Who’s Mind”
• Doctor Who and the Cyber-Man, produced by New World Pictures
  • 1980: Clu Gulager (Doctor Who / “That existed?”)
• Doctor Who, on UPN
  • 1986–1989: Kyle MacLachlan (The Doctor)
    First episode: “Pilot”
    Last episode: “The Deadly Assassin (Part 1)”
  • 1990–1993: Bruce Campbell (The Second Doctor)
    First episode: “The Deadly Assassin (Part 2)”
    Last episode: “The Edge of Time”
  • 1994–1998: John Rhys-Davies (The Third Doctor / The Professor)
    First episode: “For Want of a Nail”
    Last episode: “Seta (Part 2)”
  • 1999–2002: Kate Mulgrew (The Fourth Doctor)
    First episode: “Changes”
    Last episode: “Hourglass”
• Doctor Who, on NBC
  • 2005–2011: Neil Patrick Harris (The Fifth Doctor)
    First episode: “The Interstellar Interruption”
    Last episode: “Paradise Lost”
  • 2012–2013: Donald Glover (The Sixth Doctor)
    First episode: “…We Have a Problem”
• Doctor Who, on Blockbuster
  • 2014–2015: Donald Glover (The Sixth Doctor)
    Last episode: “The Three Doctors”
  • 2015–2019: Nathan Fillion (The Seventh Doctor)
    First episode: “The Three Doctors”
    Last episode: “World Enough and Time (Part 5)”
  • 2019–2023: Daniel Dae Kim (The Eighth Doctor)
    First episode: “Grandfather Clock”
    Last episode: “1963”

Season 26 of Doctor Who is slated for a release in the late summer of 2024, starring Matt Smith of TCM’s A Song of Ice and Fire.

Actors who played the Master include…

• James Shigeta as “the Celestial Master”, a one-shot villain from the Price era who would reoccur as a trickster figure in army fatigues in Doctor Who and the Daleks
• Robert Z’Dar as “the Master of Time”, a larger-than-life egomaniac who forced MacLachlan’s Doctor’s regeneration and would regularly clash with him in the “actionised” Campbell years
• John Anderson as “Mr. Seta”, a master (heh) of disguise who was written as a throwback to the Alien Agent era
• Christopher Walken as “Professor Tannhauser”, who, in the far future, devises an equation proving humanity can escape the end of the universe — a plan that NPH’s Fifth Doctor gladly assists in, until one of them realises just who the other is…
• Lady Gaga as “Claire Oswald”, a companion throughout the first season of the Fillion era who always seems to know a bit more than she lets on