Zygon

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Zygons
Doctor Who race
First appearance	Terror of the Zygons (1975)
Last appearance	"The Zygon Inversion" (2015)
Created by	Robert Banks Stewart
In-universe information
Home world	Zygor
Type	Shapechanging humanoids
Affiliation	Zygon Empire, Zygon High Command

The Zygons are an extraterrestrial race in the long-running British science fiction television programme Doctor Who. The Zygons have shape-shifting abilities, allowing them to replicate the appearance of another being. Limited by the small size of their force, they rely on shape-shifting and their organic space craft to conceal their numbers and seize power on Earth. The Zygons were conceived by writer Robert Banks Stewart, and designed by James Acheson as part of a collaboration with John Friedlander. Then director Douglas Camfield also influenced the final appearance. They were designed to resemble "oversized embryos."^[1]