Introduction: Alien Xenomorph Costume

Picture of Alien Xenomorph Costume

For the past few years I have been making a couple of homemade costumes for my boys each Halloween. Last year I made a Masterchief following some of the advice from this site and it turned out pretty good. This year my youngest boys told me they want to go as Alien VS Predator. Well I knew that this was going to take a bit of time so I started in September. I decided to start with the Alien, arguably the more difficult costume, not finding too much advice for making a homemade Alien costume I had to get more creative. Did I mention that I am leaving one job and starting another so I only had a budget of about $25.00?

Step 1: Building the Head

Picture of Building the Head

The Alien head seemed like the most difficult part to me... How to get that elongated tubular shape? And how to get it to stay on the kids head?  Well, I started looking around the garage.  Digging through the clutter I came up with an old bicycle helmet.  being made of Styrofoam it was pretty easy to shape.  I started by cutting the sides down to the bare minimum so my Alien didn't have too bulbous of a head.  Now we needed some tubes.  The local dollar store came in very handy, I found several 3 quart plastic containers and a plastic pitcher that seemed very promising.  Total cost? $3.00  doing good.  I cut the containers up and hot glued them onto the helmet. By the way... I went through two bags of hot glue which are about 4 bucks apiece.  Then I cut the bottom off of the pitcher, cut that in half and I had my Alien Jaws.  A little marker to draw out the teeth, sharp scissors and boom.. we had Alien teeth. I used scrap pieces of the pitcher to make the rest of the Jaws.  The head needed a little rounding, fortunately I had several empty 2 liter bottles.  By the way, careful with hot glue around two liter bottles, they wrinkle and shrink if the glue is too hot.

Step 2: Continuing the Head.

Picture of Continuing the Head.

The Alien jaw needed a little more depth, so I turned to dollar store fun noodles.  Wonderful, cheap, closed cell foam, they worked wonders.  I figured we needed some lips too so I broke out the coat hangers.  Just heat up a screwdriver and melt a little hole for the hanger to fit in.  A little more foam to fill out the neck and we are on our way.  it's starting to look pretty good!

Step 3: Finishing the Head.

Picture of Finishing the Head.

Alright.  We need some kind of neck. Off to the thrift store!   The local thrift store had a wonderful 2 dollar bag sale, so I stuffed a long black fake leather coat, black tights and a black long sleeve shirt into my bag. $2.00!  So far well within my budget.  When you cut up the vinyl fake leather it glues quite easily to the plastic.  So now I have a neck and lips.  time for some features.  The Blue tube is empty 3/8 electrical flex that I had floating around. for the other ribbed sections I used an old pool pump hose that I had cluttering up the garage. A small piece of rope, artfully cut piece of cardboard and two blue balloons for cheeks and I was set. Time for that black paint!  By the way, cheap black paint and vinyl don't mix.  The paint reacts with the vinyl and takes on this nasty sticky texture which is very difficult to get rid of.  So, before painting anything with vinyl on it, get some good plastic paint.  A couple more two liter bottles  to fill holes and we have a basic black alien head.

Step 4: Finishing Touches, Now the Body.

Picture of Finishing Touches, Now the Body.

Looking pretty good.. but the teeth look kind of flat.  Time to head to the discount store for some..... glamor nails!   A pack of 100 nails was surprisingly cheap.  Cut those babies down, even more hot glue, some silver model paint and our Alien finally has some bite.  The inner mouth is a pair of cheap glow in the dark vampire fangs glued to a toilet paper tube... cut down the tube and paint the fangs silver too.  Have I mentioned hot glue?  Most of the texture and details are just carefully applied hot glue. A couple of Velcro tabs to hold the neck together and the head is done.

Step 5: The Body

Picture of The Body

The body came pretty easy after the head.   Card board plates for the front and back.  More fun noodles for the back horns. I used coat hangers inside the noodles to get them to hold the right shape.  Cereal box cardboard for arm plates horn plates. Lots of hot glue for texture. I cut strips out of the fun noodles for the ribs, a strip of pool hose for the sternum and then covered that with a cut out piece of cardboard.   The ribcage needs Velcro tabs in order to make it  fit securely enough. Shoulder plates are mare out of more cardboard with fun noodle tops,  held on with Velcro strips.  Lots of pool tubing strips on the belly and neck for texture.  Gloves are fake leather with extra thumbs glued to the bottom. Made out of that vinyl coat I bought.  I used that fake leather on the legs also with more hot glue for detail. Oh yes... the tail.  that used to be a stuffed snake. cut cardboard vertebra out and hot glue those suckers on.  By the way.  in order to paint a brightly colored fabric snake black, you must use a LOT of paint.

Step 6: Finished!

Picture of Finished!

A couple of finishing touches.. nails on the gloves and shoes... even more hot glue and black paint. and we are done!  Now I need to get started on the Predator.   Hope this helps if somebody wants to make an Alien Xenomorph.. all you need is cardboard, plastic containers a lot of patience and.... Hot Glue!!!


Copythat11 (author)2017-06-13

I am going to try and make this and I am going to give the costume a tail, I am thinking of getting a pool noodle to use. Does anyone have any tips?

seresataka (author)2015-09-17

Ok. After you glue the neck fabric in place have your son put the head on. Then cut a rectangular hole in the vinyl where his eyes line up so he can see out. Then you can glue some black painted gauze or see through fabric over the hole to disguise the eye hole.

jhackamack-klingman (author)2015-09-06

Ok, this is my sons dream costume so im making it this year. Can you see out of it? Is there any recommendations you can give me so i dont go nuts trying to build it? Need it finished by beginning of October for his costume birthday party.

Hi there, there are three suggestions I could make... one, cheap hot glue doesn't stick to pleather. Buy the good stuff from the craft store. Two, cut a rectangle for the gauze patch, the eye hole kept moving around and made for lots of adjustments. Three, if I was to build another one I would buy a can of spray rubber sealant. it comes in shiny black and would help keep everything in place. Good luck. send me a pic of the completed costume if you can.

Im still confused on the head. Connecting the lower jaw isnt clicking for me. And i still dont get how to make it so my son can see out of it. Are there actual instructions on that part? I have the top of the head complete.

ZollieB (author)2015-09-17

How can you see out of it? And can the mouth move or do you have to put your hands on it for it to move? Just asking cause me and my friend want to be xenomorphs for Halloween and would like to know if we have any vision in the head.

seresataka (author)ZollieB2015-09-17

Hi. In the front of the neck cut a rectangle out of the pleather at eye level. Then glue in a panel of black gauze. They've got it at most dollar stores for halloween. I was going to make the mouth move at first.. then decided not to complicate it more.. I've seen some with a linkage to a chin strap. So it is possible.
Good luck!

blackholeseeker (author)2015-02-09

Thats an amazing build!

seresataka (author)2013-10-01

Thank you so much. I have a big costume project cooking this year.. hopefully I'll have time to finish it before halloween

ness0207 (author)2013-10-01

I am sooo happy to find this! My boys are wanting to be alien vs predator this year & this gives me hope! This will be my first attempt at making a costume from scratch, I can only hope it turns out as good as this!

rkeefer (author)2013-08-21

i must just say this is pretty sweet, best dad ever :)

seresataka (author)2013-07-17

I don't know... probably could, but my kids have other costume ideas this year.

wmiros (author)2013-07-16

Awesome can you make a face hugger

Garrus (author)2013-04-30

Thanks for this guide! I've convinced my 6 year old sister to be net-head. I'm even making her a fake facehugger. If anyone's interested i could make an instructable for that, but its not as cool as your stuff really amazing.

avpg (author)2013-01-16

I've made 4 alien costumes now I am goanna try this way now thanks for the instructable keep making more maybe a face huger next??????

torreyakatoe (author)2012-12-13

Cool. I like it. About how much time is needed to make it?

destructor555 (author)2011-12-23

the coolest thing ever is an alien xenomorph so I'll give you two thumbs up.

Kiteman (author)2011-09-11

Oh, that is just outstanding!

destructor555 (author)Kiteman2011-12-23

yes I agree

jhd04 (author)2011-10-29

I was like, "Whoa, that's really cool." And then I saw the budget, and I was blown away.

Very talented, you are, sir. Very talented indeed.

jpnagle59 (author)2011-10-28

A very well are to be commended. If you can, let us see the Predator build. and also get some shots on the Spooky night when the kids wear them...very good job. Jamie

brainsfried (author)2011-10-23

Terrific Instructable and great job on the costume!

Patjoe99 (author)2011-10-09

Wow you are the mot creative,most make-do, most talented costume creator ive ever seen when i saw the i think, wow thats gotta cost at least a hundred dollars then i see it was about 25 dollars

sutek (author)2011-10-06

Mate you win the most Awesome Dad in the world contest, that is fantastic and the work involved, amazing. You've got my vote

Xenomorph-Hybrid (author)2011-10-03

you are amazing :3
i have been looking for an easier way to build a xenomorph (alien) costume for a lonnnggg longggg time and now i have the answere XD
thank you so much for making this guide!
time to get started on my costume :P

Jerrib (author)2011-09-30 give me hope!!

lordofducttape545 (author)2011-09-24

that kid doesnt look very happy.....

After the third or fourth time test fitting it that night...... he wasn't.

lordofducttape545 (author)2011-09-24

YES!!! LOTS and LOTS of HOT GLUE!!!!!

SCUBASTEVEAU (author)2011-09-18

Excellent stuff. That is all.

orvis (author)2011-09-18

Really excellent costume, especially for the money. You have a talent for making mundane things and making them extraordinary.

I really do admire your thrift and industry! My perfectionism always seems to get the better of me, pulling me into obscene hours of crafting, usually at the expense of actually getting it done.

Well done.


A doing it on the cheap too! My kind of costume making 5* and kudos to you for such a great job, I have been inspired to bust out the cardboard and get gluing.

I really like the translucent look of the head in Step 1, it looks like a newly laid infant very cool!

Thank you everyone.

macgeek (author)2011-09-15

This is EXCELLENT!! - Really creative and wonderfully done!
You should enter this in The Halloween Contest!

Jonathan / Zoltar - winner 2009

seresataka (author)macgeek2011-09-16

I can't seem to find a Halloween contest for this year. Thanks!

mpatterson4 (author)2011-09-15

Awesome! How is the view from inside? Does the child look out through the mouth or from under the head? How well can he see?

seresataka (author)mpatterson42011-09-16

not too bad actually. I cut the eye holes in the vinyl right under the head, so he looks through the aliens neck. His vision upwards is blocked but he can see his feet quite well and about 6 feet in front of him. to see farther he has to tip his head back. Thanks!

Phil11 (author)2011-09-16

superb work, your son must be really happy with that!

dburrill (author)2011-09-16

Now that's a Halloween costume. Halloween is a time for scaring the be-Jesus out of the little kids. It's the only time of the year when it is permitted. I say that there should be a law, why not since there are laws against every thing else, that on Halloween there can be no cute little ghosts, cartoon characters, angels, or any such costumes.

sarawelder (author)2011-09-15

This was an excellent instructible... make me think that at 59 I might have a costume party just so I can wear this

time-killer (author)2011-09-15

VERY cool! well done.

festeezio (author)2011-09-11

Wow! Nice job!

luc.dof1 (author)2011-09-11

Very good, it's so fun. And Good Halloween

Lorddrake (author)2011-09-11

AMAZING!!! 5 stars for creativity and resourcefulness.

Cabe (author)2011-09-11

Great job!

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