Zygon

The Zygons are a fictional extraterrestrial race in the long-running British science fiction television series Doctor Who. They first appeared in the Fourth Doctor serial Terror of the Zygons, where it was revealed that centuries ago, the Zygon homeworld was destroyed in a stellar explosion. A craft escaped and somehow made it to Earth, where it then crashed into Loch Ness. When the Doctor encountered the Zygons, they were led by a warlord named Broton. Broton wished to conquer the world to allow a refugee fleet of Zygons to colonize Earth.

The Zygons have shape-shifting abilities, allowing them to replicate the appearance of another being, but they must keep the subject alive in order to use its body print. This skill was vital in their concealment and in their scheme to seize power despite their small numbers. The Zygons were also accompanied by an armoured cyborg creature called the Skarasen, the lactic fluid of which was necessary for them to feed. Broton planned to unleash the Skarasen (or Loch Ness Monster as it was known) on an energy conference in London as part of a bid to conquer the Earth. The plan was foiled and both he and his crew were killed due to the intervention of the Fourth Doctor and the United Nations Intelligence Taskforce (UNIT), while the Doctor caused the Skarasen to return to Loch Ness. Zygon technology is biological in nature: in essence their ships and equipment are actually alive.

The Zygons will return in the "The Day of the Doctor" in 2013, as announced by the BBC and will appear alongside the Daleks and the Cybermen.

Tenth Doctor actor David Tennant has stated that they are his favourite monsters from Doctor Who.

Television
The Zygons first appeared in the 1975 series Terror of the Zygons, where they planned to conquer the Earth.

The Zygons are briefly mentioned in "The Pandorica Opens" as one of the many races in an alliance against the Doctor.

In the Eleventh Doctor episode, "The Power of Three", a Zygon ship is beneath the Savoy Hotel where the Doctor takes Amy Pond and Rory Williams on their wedding anniversary. However all the Zygons seen in this story have all taken the form of humans working in the hotel and are never seen in their more 'monstrous' original forms.

The Zygons will return in "The Day of the Doctor" as confirmed by the BBC on Tuesday 2 April 2013, with a photograph of one of the creatures (shot on location in Wales) being published on the official BBC Doctor Who site. They will appear alongside the Daleks and the Cybermen.

Print
The comic story "Skywatch-7", written by Alan McKenzie (under the pseudonym "Maxwell Stockbridge") and illustrated by Mick Austin, features a UNIT team encountering a single Zygon at a remote base. It was first published, in two parts, in Doctor Who Monthly #58 and the Doctor Who Winter Special 1981.

The Eighth Doctor encountered the Zygons in the spin-off novel The Bodysnatchers by Mark Morris, which also named the now-destroyed Zygon homeworld as Zygor. The novel also revealed that Zygor had been destroyed as a result of an attack by an arachnid alien race from Tau Ceti, the Xaranti. The concept of the Zygon "sting", poisonous barbs protruding from their hands, originates from this novel; this conveniently explains why, in their television appearance, the Zygons were apparently able to inflict pain on other beings with a mere touch.

NB Actually the concept of the Zygon sting originated years earlier in the Target novelisation of the story, Terror of the Zygons which was written by Terrance Dicks and appeared in 1976 under the title Doctor Who and the Loch Ness Monster. The original script for the story also specified the sting but the on screen realisation of the concept failed to make it clear to the audience.

The Zygons appear in the New Series Adventures novel Sting of the Zygons by Stephen Cole, featuring the Tenth Doctor and Martha Jones, which is set in the Lake District in 1909.

Audio
The Zygons have been featured in three audio plays produced by BBV, Homeland by Paul Dearing, Absolution (not to be confused with the Big Finish play Absolution) by Paul Ebbs and The Barnacled Baby by Anthony Keetch.

They made their Big Finish debut in the Eighth Doctor audio adventure The Zygon Who Fell to Earth by Paul Magrs and returned in Death in Blackpool by Alan Barnes.

Merchandise
The Zygons were featured in the second Doctor Who Weetabix promotional set, and were card number 9 in the Typhoo tea card set. Harlequin Miniatures produced two 28mm figures, and Fine Art Castings produced two Zygon figurines, sized 80mm and 40mm.

In 2008, a Zygon figure was released by Character Options in the first wave of their classic Doctor Who toy line.

Zygon (BBV production)
Zygon is a spin-off drama production from BBV, featuring the Zygons. Early drafts were written by Lance Parkin, and later ones by Jonathan Blum, although both authors removed their names from the final version (which was heavily rewritten again). It was eventually released in 2008 as Zygon: When being you just isn't enough  (with an 18 certificate due to scenes of an adult nature), after a post-production period of about 5 years.