Picture of Cthulhu Costume - Latex Body Suit
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That time of year again. I must follow tradition and make a costume. But what costume could I make this year that would be more complex, more unique, and more impressive? In brainstorming, I was looking at classic designs, like the Alien, and I was reminded of influence that Giger cited, the literature of H.P. Lovecraft. Once the name "Lovecraft" came up, my mind went immediately to Cthulhu, of course.

I've made many costumes as replications of cinematic characters. But this was something different. Cthulhu is a strong part of the popular culture of recent generations, but is seldom seen in three dimensions. There have been a number of visual interpretations of the Great Old One, from video games to South Park. The public does have an image in their mind when they hear "Cthulhu". This character allowed for a costume that could be unique in several ways: it's a costume that no one else would have, or imagine me having, and people may not be able to tell I made myself, because of the complexity of the design and construction method. It would also allow me to be creative and make my own design. All of these unique prospects appealed to me. And I love the challenge of creating extravagant items on a low budget. Producing a full-body latex suit often costs into the thousands. My aim was for under $300.

Prior to my own costume, I had only seen one half-decently made serious costume of Cthulhu. Indeed, there have been many furry costumes and adorable plushies, as Cthulhu has been turned "cutsey". But it's time to get him back to his more monstrous form.

Here is a video you can watch that shows the overall process. It's easier to see some of the steps in motion, but the Instructable has much more information and is more detailed.

CortezS3 months ago
Quick question how much clay was used for the torso section?
LorenaRebecca5 months ago

Hi, Hun! Sorry for asking such a fundamental question. Did the WHOLE latex you used in the costume cost you only $85? Where did you buy it and how did you ask for it? Is it a special latex or how can I order it? My problem is, I live in Mexico, and market for latex is not too broad, so whenever I ask I only get "latex paint for walls".

If you can help me it'll rock.

This is amazing! I would like to see a "Call of Cthulhu" short film
Do u have to wear something specific under this? Or will everyday clothes work fine as well?

I'm a huge Cthulhu fan and this is so awesome. You are so talented and creative, good work!

that was awesome. i just finished the video. i can't believe you do most, if not all the work on your own, especially the own casting of your body.. that is hard core, but totally awesome. gives me some hope of one day working with latex
Amazing work of art. Congratulations for having such dedication and ability.
CrayfishYAY2 years ago
nnewell2 years ago
can i buy liquid latex for costumes like this on amazon? I'm planning on making a man of steel costume so im wondering where i can buy liquid latex for a full-body suit like this.
poofrabbit2 years ago
Congratulations on being a finalist in the Halloween contest!!! Can’t wait to see if you win! Good luck!
pokiespout2 years ago
This is beautiful! We should battle our monsters.
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flyingpuppy2 years ago
But how does a Cthulhu kiss?
You REALLY dont wanna know... ;)
Orngrimm2 years ago
That, Sir, ist a lot of work, but the outcomings are all worth the effort and price! superb costume for sure! :)
ethertree2 years ago
This is awesome! I've never worked with latex before - I think I might have to after reading this. Fantastic costume, and thanks!

I'm learning some mold making and casting right now, and have a small general tip: To remove water-based clay from plaster, get out what big chunks you can by hand, then soak the (fully cured and dried) plaster in a large container of water. Agitate as needed. Since the clay hasn't been fired, it dissolves right out (and dissolves faster with warmer water).

This may not work as well if you're using the store-bought plaster of paris strips instead of cloth/burlap drenched in plaster, or if your mold is patched with joint compound (I don't know enough about joint compound to say). Perhaps that's why you didn't do it and I'm just going off on an unnecessary tangent :P

But anyway, that could be solved by patching the plaster mold with plaster instead of joint compound.
Time lost in the soaking of molds for both steps, but time gained in the swifter and hands-free removal of clay.

Once again, awesome job, and thanks!
flamekiller2 years ago
Awesome costume!

One question though ... why not dissolve the styrofoam head fill with acetone instead of chipping it away bit by bit?
alexthemoviegeek (author)  flamekiller2 years ago
Because I'm an idiot. Ha.

I was aware that acetone can dissolve Styrofoam, but for some reason I never made that connection during that process.
The best ideas always come after they would have been most useful, huh?

Oh well, there's always next time, right?
LobosSolos2 years ago
Did I see you in this at Dragon*Con in Atlanta? It looks familiar.
alexthemoviegeek (author)  LobosSolos2 years ago
That would not have been me, no.
GTAtomten2 years ago
Very cool work! Great to see from you again. For your future projects, you should try putting so called "keys" into your 2-part mold halves, basically made by making an indentation in your dividing wall to create a bulge on one half that fits into the indentation on the other. That will ensure your mold halves fit together properly.
alexthemoviegeek (author)  GTAtomten2 years ago
I did have those on the finger pieces, yeah, slipped my mind for earlier pieces. But for the most part, the molds I made were so irregular around the dividing line (not perfectly smooth) that they only really fit one way anyway. But yes, even still, keys would have helped with some other molds.
lisascout2 years ago
DUDE. You are one serious costume creator! Have you ever tried getting in touch with a large filmmaker who does this kind of work? Your talents and tenacity are rare. SUPER JOB!
Jerrib2 years ago
Jaruemalak2 years ago
This scares me... and I am impressed as hell! Great work!
jwilliamsen2 years ago
The costume is impressive, but I think I'm most impressed by your focus and tenacity. Reminds me of my days building furniture on the living room floor of my apartment.... Great job - love the overview video. :)
macgeek2 years ago
Awesome, Winner, Spectacular!!!!!

Many props!

No words!
HP himself would approve! Wow. Great work on the instructable, too.
khoirulabd2 years ago
scoochmaroo2 years ago
Oh, Alexthemoviegeek, how I look forward to your Halloween entries every year. You never disappoint. Or make me envious of your life. <3
Aleator7772 years ago
Ia! Ia! Cthulhu Fhtagn! Awesome work!
Honus2 years ago
Absolutely freaking fantastic. Guillermo del Toro is smiling somewhere...
The way you made it is genius! Amazing job. :D
poofrabbit2 years ago
Oh man how cool is this! Very nice work!