I sort of made up the part for the hat but I found the chart for the Decepticons on Flickr: http://flickr.com/photos/twoonesix/168804084/
I have the feeling I'm going to make one for myself soon but with sparkly yarn instead of just the solid colors.
I did the chart fair isle on the hat instead of intarsia. I used size 8 needles but looking back I should have gone with size 7's or even size 6. It only took a day to knit so it was a quick project.