List of Doctor Who universe creatures and aliens

Clara Oswald and a community service worker named Rigsy are able to trick the Boneless into restoring the TARDIS, allowing the Doctor to send them back to their home dimension.

[32] In "New Earth", a group of Catkind called the Sisters of Plenitude run a hospital near the city of New New York, where they test on human subjects by infecting them with every disease in order to concoct cures for them.

[44] Director Matthew Robinson elected to make the Cryons an all-female race, as otherwise Attack of the Cybermen would have had an all-male cast barring the Sixth Doctor's companion Peri Brown.

Notable Dalek operators include John Scott Martin,[67] Barnaby Edwards,[68] Nicholas Pegg,[69] Jon Davey,[70] Tony Starr, and Cy Town.

The popularity of the Daleks ensured the survival of Doctor Who, which was in danger of being cancelled due to low viewing figures from the prior serial, An Unearthly Child (1963).

The comic Quiet on the Set, released in 2013 by IDW Publishing, depicted the Tenth Doctor fighting the Dominators in Hollywood, Los Angeles, where they attempted to make a movie that would spread subliminal messaging to turn humanity into an ideal labor force for them.

[84] They re-appeared in the novel Mutually Assured Domination, published in 2015, where they set up the company Dominex Industries in order to harness nuclear waste to power their fleets, only to be defeated by Brigadier Lethbridge-Stewart.

Common interstellar travel and attempts at colonization have brought them into frequent and occasionally hostile contact with humans, leading to a treaty establishing a frontier between the two empires.

The 2020 online short story The Simple Things depicted a Draconian attempting to repair a battle cruiser in 1896 West Ham with the help of an ironworks company.

They appear as tall, roughly humanoid creatures with fish-like heads, who can breathe in air via the employment of apparatus fitted to their faces that incorporates a canister of green liquid.

Despite their name, most people are unaware of this literal description being true, because except under very special circumstances, one incurs a death penalty if they ever remove the hood of a monk.

The Fourth Doctor and Sarah oppose the Kraals in the 1975 serial The Android Invasion, when the creatures attempt to take over the Earth using robot duplicates of key people in UNIT.

They are artificial crystalline organisms with rudimentary mobility and understanding of simple commands, created and controlled by the main antagonist, Skagra, to aid in his plan to forcefully merge all of the minds in the Universe into a single omnipotent entity.

The Fourth Doctor intervened in the nick of time and ensured the Krynoid was destroyed by a bomb, but the second pod was stolen and taken to the home of millionaire botanist Harrison Chase in England.

Chase ensured the germination of the second pod, which overtook his scientific adviser Arnold Keeler, and transformed its subject over time into a virtually full-sized Krynoid.

They are able to copy other beings with incredible accuracy from their physical appearance to their memories as well while keeping a degree of flexibility allowing them to run faster or twist their bodies in unnatural ways.

The Doctor and Donna Noble are shown witnessing nearly all of the survivors of the race escape in their ship to where the Earth would later form, serving in place of a planetesimal as its core, hibernating for billions of years, with the exception of their Empress.

This pair are created by the marriage of a member of both Slitheen and Blathereen families, and attempt to trick Sarah Jane Smith into accepting a gift of the Raxacoricofallapatorian plant Rakweed, which begins to poison the Earth with deadly spores.

However, these are easily explainable; as "fish from space", they are used to living in the dark depths; anyone's mind cannot deal with conflicting information of a perception filter and a Saturnyn's true reflection; Rosanna and Francesco drank the blood of the girls attending the school so they could replace it with their own.

Their leader, Signora Rosanna Calvierri used a perception filter to appear as a human woman, who started a school for girls; it was a guise for seeking victims to be transformed into mates for Francesco's brothers.

[209] The Elixir has remarkable healing properties, such as aiding Time Lords undergoing difficult regenerations; the Fourth Doctor was given some after brain damage in a mental duel with Morbius.

[210] Other potions that the Sisterhood brew can allow Time Lords to choose what their next incarnation will be like; they range from age, weight, strength, emotion, sex and mindset.

As seen with Strax, Sontarans can't tell the difference between men and women ("Two genders is a bit further than [they] can count"), and think polite terms such as Miss or Mister are military ranks.

They also produce vast numbers of young and grow from birth to adult in under a year, as shown when the Tenth Doctor shows a year-old clip of San Helios before its Stingray infestation.

Urak and the enraged Tetraps capture the Rani in her ship and take her back to their home planet, to force her to help solve their natural resource shortages.

They are echoes of the possible future selves that the Doctor, Clara, and Trickey and Gregor Van Baalen would have become from being exposed to the Eye of Harmony too long; they were burnt by it as their cells liquified.

In "The Sound of Drums" and "Last of the Time Lords" (2007), the Master rescues four Toclafane from the end of the universe prior to an eventual Big Freeze, using them to fake a first contact situation in order to draw the world's leaders into one place for easy capture.

During "Logopolis" (1981), the Master caused the destruction of the Traken Union and its people by unleashing entropy back into the universe, leaving Nyssa (as far as she or anyone knew) the sole Trakenite in existence.

The Wirrn intended to use the sleepers as a food source and claim the empty Earth for their own, as both a means of survival and an act of revenge against the human race for taking their former territories.

"Voyage of the Damned" (2007) featured a Zocci named Bannakaffalatta, who aids the Tenth Doctor in attempting to stop a space-faring version of the Titanic from crashing into the Earth.