Picture of Bowser Costume
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Hello there! Bowser was my first choice to put up on because it’s one I can easily access photos and video right  now and I tend to get the most questions on. Though I’ve learned to improve many mistakes form a previous suit, this one was challenging, fun and well liked by many fans of the games.

I’m not really sure how to explain it as a step-by-step tutorial but I’m willing to give it a feel of tell you what I did step-by-step and letting you figure out the rest.

I would not recommend it for the faint of heart I’ve spent over $375 ( including recent repairs) on materials alone and hundreds of hours spent thinking and developing how to build some parts of it. Let alone around 200 hours of building it. in total it took me around 9 months to finish and debut on a deadline for an anime convention.

It is a fairly heavy costume. I would highly recommend it for a heavy set person to fill out the character’s personality and proportions really well.

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Step 1: Design

Picture of Design
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First thing I did right from the start is draw possibilities of designs.  I drew the head and as I draw I sketch, and draw ‘layers’ this helps my brain figure out what I should do and how I should put it together. I’m sure this may help others as well.

I decided how to ware the shell as a ‘backpack’. But I didn’t want the straps to show. So the body suit would have a open back like a ‘smock’ or ‘scrubs’ where it would tie in the back, this design also helped with air ventilation.

I wondered how many ‘pieces’ this suit will take and how much space it will take in a room or car. THIS part is very crucial. This suit of mine takes up A LOT of room and space. Not because I’m a big person and this suit makes me even ‘bigger’ the largest piece is the shell and it’s awkward to pack around and store. But thanks to my father it hangs in an open closet stand quite nicely but still takes up a chunk of space in my room.

This suit ended up being 8 detachable pieces. Head, shell, suit, Left hand, Right hand, Left foot, Right foot, and tail.  During the designing process I also tried to visually putting it on and what process I would take to do so. This ended up being a bit of a ritual but the time spent on putting it on is quite easy if no steps are skipped.


I also did a lot of research on the internet and looked over Deviant art,, and Google images to find ANY and all previous Bowser costumes I could find. With a mix of Gijinka, poorly built, well built, and intriguing designed ones I gained an understanding what I’d be faced up against trying to build such a monstrosity. I also looked up and gathered original art form Nintendo. As well as Fan art from devoted fans of the franchise and games, also fans of King Koopa himself.  This gave me an understanding what Nintendo wanted the character to be portrayed as and what the fans saw Bowser as.  I also take still shots of animation and videogame animations to get a understanding. I tried to find a well made 3-D model of Bowser, or a toy of some sort but I found nothing I would be willing to buy as a reference.


I also looked up Turtles for the shell, Bull horns for Bowser’s horns, and stubby legged creatures. I did gain a reference form Riley’s CanineHybrid’s Groundon costume that also shared stubby legs and it hlepd me a lot with making Bowser. 



Instructibles is like a galaxy of stars. Every one shines, everyone amazes me. You have gone supernova with this! Even expecting stellar posts, this one is truly in a class by itself. if there is a costume contest coming up, you'va already got my vote! Maybe there could be equals, but I seriously anything or anyone could top this. Just SPECTACULAR!!!!
CassiniCloset (author)  burnerjack012 years ago
Thank you for your time to comment with a message so awesome!
It really means a lot to me to hear such wonderful enthusiasm and encouragement.
keeton__l2 months ago

I really wanna make this

pcame5 months ago
wow wow! yo quiero uno :'(

OMG.. this is amazing.. my friend is looking to cosplay as bowser, so we may really be using this tutorial. great build and awesome work.

Nice work on the Bowser costume. He looks pretty Awesome. I wanna make this costume for my movies and videos on Youtube.

cooldog11 year ago
That is a cool costume and so life like
chspyder1 year ago
best costume I have ever seen. I so wish you made these for others I am so uncreative I can do anything on the computer but this art is way to advanced for me! purely awesome!
misskari1 year ago
You are pretty much the coolest person. :D If I ever run into you at a con, I want a photo and a hug.
Hi, I just found this site and your post--Bowser looks amazing! I am making a Cheshire Cat suit, and as I was getting an idea of the head formation by your post, I am curious how you attached the fabric to the foam structure? Glue? THANK YOU so much!
CassiniCloset (author)  Blue Monitor1 year ago
I don't tend to use glue on the 'skin' fabric, unless it's a place where the fabric needs to be tucked in. I drape the fabric and sew the fabric firmly on the foam structure, this allows flexibility if something should need to be fixed latter down the road and you don't want to pull foam off the finished structure.
Hope that helps. ^^ and Thank you.
poofrabbit2 years ago
Congratulations on being a finalist in the Halloween contest!!! Can’t wait to see if you win! Good luck!
I love it, you are amazing, if only i was this talented =P !!!
this is LEGIT like if this was in stores it would prolly go for a few bills. thumbs up amazing!
Great job on this project! Such a great costume! Have you seen the Teenage Mutant Ninja Turtles costumes that wmorey37 made out of paper mache? Unbelievable! Check them out here:
HollyMann2 years ago
Wow! love it!!!!!!!!!!!!!
Well If i was Mario right now i think I would be so scared i would go right away and cry to princess Peach
Nick705872 years ago
I love it! What a talent!
sauwen2 years ago
Wow, amazing work on the Bowser costume!! *high five* :-)
I hope you have the chance to do many many more costumes like this one. You have an amazing talent keep going and keep posting them!!!
Dr Qui2 years ago
Sweet, you rule!
poofrabbit2 years ago
This is wicked cool! Great 'able and again just plain amazing!
Ah, and people make typo's, everyone knows that. :)
nerd972 years ago
poofrabbit2 years ago
Hey have you entered this in any of the active contests? You totally should!! I am not sure if it will fit any of them, but it just might (like maybe you made the cut for the fashion contest or make it real.) I'd stretch and say it could go in the spy because you could be working the street collecting intel in cogneto (which I clearly can not spell). I just think this is fantastic and will vote for ya if you enter one of the contests! Again amazing job!
CassiniCloset (author)  poofrabbit2 years ago
Personally I’m not one to go for contests. But I will keep it in mind for the future ^^
I hope you do, such find quality should get some recognition, and if you win free stuff is always wonderful as well. :)
syates32 years ago
Didn't you go to Anime Banzai 2011? Because if then I met you there. It was a pleasure.

However still I still think you need fans for cooling and ventilation. I'm no expert I just work a lot with PC cooling. Looking at your design thou I see why you said you didn't.

However what you could do is take a hole saw on the inside of that "shell peace" to both lighten (I'm sure it's pretty light but still foam on skin gets hot fast) it and create an air pockets then attach fan mounts to the inside skin of the shell (tricky part is venting without exposing you could hide them with your spikes thou if you made them hallow I can't remember if they where removable or not) and toss in some exhaust fans for as big of fans as you want to haul around thou less is more and if you can do like one big 220MM fan rather then a bunch of smaller ones take volume over quantity. Push the humility out the shell and another out the front of the nose. I enjoyed the build, and if you have questions ask away heh.
CassiniCloset (author)  syates32 years ago
Yes I did.

Actually I did install a removable battery powered small PC computer fan in the mask. After having that luxury, I haven’t the faintest Idea how I survived at Anime Banzai.

Thank you for the suggestions I will remember them for future projects. And to answer your question, the spikes are not removable.
The suit itself is close to its own retirement and I wish I met you sooner to incorporate your idea with fans on the shell.
But as I said, I will remember it for future costumes.

I’ll be at Banzai this year, though I’m afraid I won’t be bringing Bowser. I have plans to bring Keroberos instead, a winged lion quad suit, be sure to look out for that ^^
OH does this mean another wicked cool instructable is coming?
I'm trying to do a costume of King Kazuma (cause I'm tall and skinny at 6'1) this year but I'm really dragging my heels. Time is running short. I just need to start building parts that I don't need to buy bases for.

But either way I'll see you there I hope, I just hate going out of costume always feels weird.
CassiniCloset (author)  syates32 years ago
Same here LOL
I feel nude in a crowd of nerds without a costume XD
Exactly lol.
megaduty2 years ago
Amazing quality; very well done!
lpxav2 years ago
Awesome!!! Beautiful work!
Thank you to share this really good creation!!
itrion2 years ago
best cosplay I have ever seen. It is AMAZING
seamster2 years ago
Great work! The costume is awesome.

Thanks for taking the time to post this.. I really enjoyed seeing all the details and all the work you put into this! Major kudos.
troll duck this would go awesome with a prank i'm voting ten coppers out of ten=)