Goddam internet. Now I've got to find out what the thing is about Fu Manchu (see above). Here's Sax Rohmer's "classic description"

Imagine a person, tall, lean and feline, high-shouldered, with a brow like Shakespeare and a face like Satan, a close-shaven skull, and long, magnetic eyes of the true cat-green. Invest him with all the cruel cunning of an entire Eastern race, accumulated in one giant intellect, with all the resources of science past and present, with all the resources, if you will, of a wealthy government--which, however, already has denied all knowledge of his existence. Imagine that awful being, and you have a mental picture of Dr. Fu-Manchu, the yellow peril incarnate in one man.

And here's a chronology which claims that in The League of Extraordinary Gentlemen, "The Devil Doctor is clearly Fu Manchu".