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Tamerlane
The Pietà is a common subject in Italian and European art, one that has been heavily adapted into popular culture for its strong symbolism (every time you have the death of a major character, like at the end of Batman v Superman). Michelangelo's one is just the most iconic representation of the subject. While I do agree that the cover share some of the traits of the theme, that pose of the characters (the alive figure standing vertical looking at the observer rather then the dead body, the dead body lying perfectly horizontal) is rarely found in religious depictions (if only for how unrealistic it is). It is a lot more common in popular culture representation, more often than not with the killer being the standing figure.
Also, she has only one leg in the picture...