The focus seems a little off, and the lighting is harsh, but I did get a chuckle from this image. Your superhero looks like a cross between Little Red Riding Hood and Elvis. :)
Just wait until Super Greenman's turn comes and he releases his mercury into our water supply. ;-) (Seriously, this is a clever idea very nicely captured. Good job!)
Great take on the challenge. I think it would have been better if it was stood on a piece of curved card so that we didn't see the line in the background but he colours are nice and vivid and I think the shadow actually adds to the over all affect.
Excellent, very funny. A green cape would have been better. Very creative and good composition. The focus is a little soft and the line in the back is not quite horizontal. A seamless background would probably help.