Doctor Who has a long history of spinoffs, but they have been the exception rather than the norm. However, that may change with the return of showrunner Russell T Davies, who has promised more content and a shared universe to rival Marvel, Star Wars, and Star Trek. With so many characters in the Doctor Who universe, there are plenty of possibilities for spinoff shows.

One potential spinoff could center around the Master, a character who has been a mainstay of the show since 1971. The latest incarnation, played by Sacha Dhawan, underwent an identity crisis and even briefly became the Doctor. A series focused on the Master or Missy could delve into their history and provide a fresh perspective.

Another potential spinoff could focus on UNIT, the alien-fighting organization that has appeared throughout the show's history. This would be a budget-conscious choice as it would be set mostly on Earth, and it could explore different types of invasion stories.

The monsters of Doctor Who could also get their own show, potentially as an animated anthology series. Animation would eliminate the need for costly CGI or prosthetics and could appeal to younger audiences.

Tales of the TARDIS, a series that incorporated past Doctor-companion duos, could continue with a second series featuring companions from the revival era.

This would appeal to fans nostalgic for those characters.

The Fugitive Doctor, played by Jo Martin, could also have her own spinoff series. Her backstory and adventures could be explored further, and Jo Martin's performance has garnered positive reception.

The Sarah Jane Adventures, a spinoff centered around former companion Sarah Jane Smith, sadly ended due to the death of actress Elisabeth Sladen. However, a spinoff focused on her companions Luke, Clyde, and Rani could continue the legacy of the show.

A police procedural set in space, potentially centered around the Shadow Proclamation, could provide a different take on the Doctor Who universe.

This could feature various alien species and adventures.

River Song, a fan-favorite character, could also have her own spinoff focusing on her Doctor-less adventures. This would allow for exploration of her character without being overshadowed by the Doctor.

The Eighth Doctor, played by Paul McGann, has had limited appearances onscreen and is a popular choice for a spinoff. A gritty Time War series featuring the Eighth Doctor would provide an exciting backstory for the character.

Finally, the introduction of bi-generation in The Giggle opens up the possibility for each Doctor to have their own spinoff.

The Fourteenth Doctor, played by David Tennant, could have a spinoff series focusing on his new life at home with the Nobles.

With Russell T Davies at the helm, the future of Doctor Who spinoffs looks promising. These potential shows would allow for further exploration of the Doctor Who universe and provide unique experiences for viewers.