These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
They are also very popular in South America, Japan, and Australia.
Memetic Mutation: The artwork for Anthology, depicting the band wearing only loincloths. It's frequently listed as one of the worst metal album covers of all time. It's not considered an official release by the band. (Though The Kingdom of Steel: The Very Best of Manowar is the only one of several compilations they endorse, so it might not be just because of the album art.)
Narm Charm: Well, the band's lyrics are all about ridiculously over-the-top machismo, and nobody hides it, and nobody pretends to have any deep message in those lyrics either. However, would the band still be Manowar if things were any different? Of course, their songs do go in considerable depth about Norse mythology, and Achiles was noted by one scholar as being a stellar example of Shown Their Work. Also, Christopher Lee likes them.