Picture of Killer Croc from Batman: Arkham City
This is an instructable for my Killer Croc costume. My son picked out what costume I should build this year and he loves the video game and figured this would be the most challenging character to bring to life. He wasn't wrong.
For this costume you will need the following:

Furniture foam in both 2 inch and 3 inch varieties.
Utility Knife
Glue gun and sticks
Two 'sweat-wicking' stretchy work out shirts; full sleeve. One a size bigger than the other
Plus size prison uniform costume
"Ogre" facial prosthetic *
Grease make up kit; green, black, yellow
32oz Green liquid latex*
PAX paint; Yellow, Green, Black, Brown, Flesh tone*
Brushes, foam paint roller, brown paper or newspaper
Needle and thread

* - I can advise a website on where to buy upon request
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Step 1: Building the Muscle Suit

Picture of Building the Muscle Suit
The first step is to carve muscles out of the furniture foam; I looked at anatomy pics online, other muscle suits and a pic of Killer Croc himself to best determine what muscles I needed and how big they should be. You will need to carve out a pair of pectoral, deltoids, shoulder, biceps, two parts for triceps and forearms. I carved out a single piece for the stomach and a piece for the back to make it look hunched and hulking. You do not need to worry about looking "cut" as Croc isn't, he's just massively muscled.

Once you have the muscle groups carved out you sew them on top of the first workout shirt; the SMALLER sized one. You'll want to try on the shirt periodically to make sure the placement is good. Once you have the muscles sewn on, you'll fit the larger shirt on over it and sew the two shirts together at the wrists, the bottom and at the neck. You do NOT sew entirely around the openings, just enough to connect them together so they don't pull apart when you're trying on/off the suit. A few stitches at each spot is plenty.
poofrabbit2 years ago
This is awesome!! Well done!
DiddyK (author)  poofrabbit2 years ago
Thank you very much!
mikeasaurus2 years ago
That mouth is frightening
DiddyK (author)  mikeasaurus2 years ago
Thanks! Absolutely what I was going for lol