This is my first time ever using putty so be nice :P
I have been turning all my Batman DCSH in to ML for the same reason as everyone else, but when it came to doing Robin I had to use a figure that was shorter then the rest so in came my old Spider-Man Classics Figure.
I had seen customs of Robin using the DareDevil SMC figure but seeing as I don't have one I had to use my Spider-Man.
I was going to wait until some one on a website was selling one but thought that this would be a good opportunity to use putty for the first time as unlike DareDevil, Spider-Man has his webbing sculpted in and would still show up after painting.
So I coverd it up (torso, arms, hands, feet) and then painted it over, then modified my DCSH Robin head/cape and glued it on.
Base: Spider-Man (Spider-Man Classics)
Head/Cape: Robin (DC Superheroes Wave 3)
Belt: Batman (Mattle)
ps. I know about the muscle definition but I thought I would wait until I've practised more before I move on to the hard stuff.