Iron Maiden's nearly 40-album run, from New Wave of British Heavy Metal pioneers to '80s-era megastars, offers us plenty of platinum-plated high points.

But the above video, courtesy of our friends at Loudwire, digs into the lesser-known corners of this band's amazing legacy. Every one, for instance, knows Eddie. But what were the origins of the distinctive mascot who's appeared on almost all of their albums?

Did Iron Maiden live up to the goals of their original singer? Then there's the secret messages hidden in  'Powerslave''s album cover. Find out about all of that and more in the latest edition of the You Think You Know Metal? series.

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