Fin Fang Foom is just the best comic book monster ever! When Stan and Jack and Dick concocted this woeful ancient Chinese dragon they hit a homer. Aside from the weird underwear, Foom proved to be a truly strange monstrosity and no less so because unlike so many of them he could speak and speak eloquently. It's that latter quality which elevates among the ranks of Marvel monsters.
I first encountered Fin Fang Foom in the pages of Fantasy Masterpieces and so imprinted on the orange version and not the original green.