Khurasan Miniatures produces historical and non-historical ranges, some in 28mm, most in 15mm, and a range of 6mm SF stuff. It is a pretty rich variety though some figures seem more inspired than others. Good detail, the figures are easy to paint. I have yet to do a size comparison since I only have some threatening looking aliens. The figures do seem to tend a little large. Another American company, this one in NY.

just a note, the ursids wear sunglasses and smoke cigars.