I made this Riddler Halloween costume my self which took me almost 3 months to finish. I started with a green spandex body suit. When I got the suit I had to stretch each section out and one side at a time I would use the stencils I created with thin sheets of plastic and use black fabric paint and would put different sized question marks around the whole suit.
The hat was a green derby I bought and put some green felt around the rim and stenciled a question mark on the front. For the eye piece I shaped it to my eyes and cut it to form and colored an elastic band green which I sewed onto it.
For shoes I used a pair of black water shoes. The cane was a little harder to make. I was lucky to find the question mark top at a thrift store. For the shaft I bought a piece of copper pipe and on the bottom I put the end of a shower curtain rod. At the top a small piece of copper and I put question mark into top with some silicon to hold it in place.
I made this costume being a huge fan of the Riddler and loved the role Jim Carrey did for it.