Duke Nukem was always my favorite eco-villain from Captain Planet. He looked cool, had super powers, and shared his name with a first-person-shooter. This mutant thrives on radiation and toxic sludge. Duke rocks an awesome red mohawk and some cool rocky skin. I also really like the fact that he only has three fingers.
This figure's "skin" is made of some really nice glow-in-the-dark plastic. He charges up really well and glows great. I bought Duke Nukem at a yard sale as a kid... but I don't know what happened to him. I recently picked up this one at a toy show (NJCC).