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This Animatronic Test Video for the “Stranger Things” Demogorgon is Practical Effects Heaven

Practical effects will always be the coolest.

Last year’s “Stranger Things” gave rise to the Dungeons & Dragons-inspired Demogorgon, a long-limbed monster with a petal-like face that opens to reveal a dentist’s worst nightmare. Hell, ANYONE and EVERYONE’s worst nightmare. The creature, brought to life both practically and digitally, was portrayed by Mark Steger, who we chatted with last summer. Steger explained to us that Spectral Motion tested out the various appendages and appliances for several months during pre-production, and now one of those test videos has been uploaded by the company.

Spotted on the Spectral Motion Facebook page, the 35-second video shows a movement test of the animatronic Demogorgon head, revealing that much of what you probably thought was digital was actually old school practical effects. The video highlights the monster’s face opening and closing, and we apologize in advance if it causes you to lose some sleep tonight.

The company also showed off some behind the scenes photos of the Demogorgon head being sculpted and the suit being tested out by Steger, which you’ll find below the video.







  • G.A. McGillivray

    My only complaint of the entire show was that every seen with that creature was so dark it was hard to see anything…. They only way I knew what it looked like was from Episode one – looking at the D&D figurine for a few seconds.

    • Meisha’s Taint

      Thank you that reminds me I need to water my flowers

  • J Jett

    that’s freaking awesome!

  • disqus_uPh3WDxbQy

    Epic effects. Love the show and I’ve already pre-ordered the Demogorgon Funko Pop figurine. Can’t wait for Season 2.

  • Satanzilla

    The creature in the show really doesn’t look anything like the D&D monster.

    The kids just call it that because Demogorgon is a very powerful D&D monster from another dimension.

    It actually reminds me more of creatures from Half Life which are also extradimensional — it’s like a bullsquid’s head on a vortigaunt’s body.

  • marklola12 .

    hmm it looked crap on watching the series though, some was obv bad cgi in some scenes, maybe it was too dark

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