The original Cybermen from the planet Mondas will be back to menace the Doctor in the last two episodes of "Doctor Who" series 10. While the episodes, which are currently being filmed in Cardiff, do not yet have names, the BBC has revealed that, like the previous two "Doctor Who" series finales, this one will be helmed by "Tank Girl" director Rachel Talalay. The two-parter will also feature the return of Michelle Gomez as Missy/The Master. RELATED: "Doctor Who:" Meet New Companion Bill in Season 10 TrailerThe news of the Cybermen's return was accompanied by a tweet from the official "Doctor Who" Twitter account, which included a picture of Peter Capaldi's Doctor facing off against his old enemies.

Created by Gerry Davis and Kit Pedlar, the original Cybermen were humanoid aliens from the planet Mondas who, over the years, gradually replaced all their organic components with artificial equivalents. These Mondasian Cybermen made their debut in the First Doctor's final story, "Tenth Planet," back in 1966 and have a fatal weakness against gold. They have also long been Peter Capaldi’s favourite "Doctor Who" adversaries.

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In the revived series, the Cybermen were re-introduced in the episode "Rise of the Cybermen" as the product of the Cybus Industries on a parallel Earth. These Cybermen were enhanced humans who had undergone a cyber conversion process that striped away the recipients' flesh and emotions, replacing them with metal and circuitry.

The Cybermen are not the only returning monsters set to appear in the show's tenth series — writer Mark Gatiss has already teased that he has penned an Ice Warriors story for the show.

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Starring Peter Capaldi as The Doctor, Matt Lucas as Nardole and Pearl Mackie as Bill Potts, "Doctor Who" returns to TV screens on April 15, 2017.