There was a company called Horizon that made 1/8 scale vinyl kits of comic book characters. I don't know if they are still around but maybe on ebay. There's another company called Playing Mantis that makes a Spiderman kit which I think is a re-release of a very old Aurora-type kit.
Here is my Beast Beast These WizKid kits are pretty decent. The Beast is nice, Thor is OK, his muscles are a bit overstated, the Ghost Rider is a bit to comic-ish but not terrible.
Character is what you do when no one is looking.
Few things are harder to put up with than a good example.- Mark Twain
Make yourself an honest man, and then you may be sure that there is one less scoundrel in the world.--Thomas Carlyle