Mark Braxton, writing in a retrospective review of
Terror of the Zygons for
Radio Times, praised the design of the Zygons, stating that "the Zygon is exquisitely horrible." Literary critic
John Kenneth Muir also praised the Zygon's design in his retrospective review of
Terror of the Zygons, citing the Zygon costumes as "...incredible to behold," further stating that they were "so interesting and effective as an extraterrestrial design."
Den of Geek's Andrew Blair highlighted the costume work for the Zygons in their debut, particularly that of their leader, Broton. He stated that while Broton was not a well-written character, the performance of his actor, coupled with the effective design of the Zygons, helped to make Broton a memorable villain.
Radio Times's Patrick Mulkern praised the Zygons as an inventive concept, and also highlighted how later changes to how their shapeshifting works (By plucking their forms from people's memories) helped make them unique compared to other shapeshifting aliens in science-fiction shows. Mark Rozeman, in a review of "
The Zygon Invasion" for
Paste, stated that while the Zygons were an inventive concept, he felt the Zygons often played "second fiddle" to other major elements, such as the reveal of the Loch Ness Monster being an alien and the conflict of the Time War, that led to them not appearing as a major element in their stories. Simon Brew, writing for
Den of Geek, responded positively to the usage of the species in "The Zygon Invasion", believing the Zygons were an effective return given their lack of usage in prior years, as well as for their effective design. The Zygons' role in "The Zygon Invasion" and "
The Zygon Inversion" has been the subject of discussion for its real-world allegories. The Zygons were considered by Rozeman to be considered an allegory for the
Muslim population in Britain, with many aspects of the Zygons' role in the story paralleling them; Rozeman considered this "an instantly effective way of contemporizing the Zygons", though was worried about the show handling such serious subject matter. Steven Cooper of
Slate also noted this allegory, comparing the splinter group to the real-world radicalisation of young Muslims. Writing in a review for
The A.V Club, Alasdair Wilkins highlighted the desires the Zygon splinter group expresses in the story to want to live in their original form above all else, which Wilkins stated helped the audience understand their goals in a more relatable manner than the Zygons' previous desires for world domination. The book
Aliens in Popular Culture stated that the Zygons represented British anxieties over
refugees, with the species' differing goals (Some desiring to live in peace while others desire world domination) and their shapeshifting abilities being stated to reflect "mixed feelings regarding the treatment of refugees as aggressors or victims" in Britain. The book
Doctor Who: Twelfth Night similarly stated that the Zygon conflict represented British views towards migrants, particularly via the story's usage of allegories to real-world events. The book also stated that the splinter group is allegorical of various real-world
Islamist terrorist groups, with many cues in the story being used to draw audience attention to the similarities between the splinter group and contemporary events involving these groups. Magdalena Stonawska, writing in the paper
Loving the Alien: How Fictional Alien Invasions Are Helping Us To Be Better Humans, characterised the multiple interpretations of the various Zygon groups in the story as showing how
Doctor Who as a whole uses various narrative tropes to convey discussion about multiple current issues. A new species of
parasitic wasp, first described in 2019, was named
Choeras zygon in reference to the Zygons. == External links ==