I imagined that at the time of his fall his halo and wings turned black and the tears he wept at being banished from heaven were permanently stained into his porcelain skin which has also began to crack due to his inner corruption.
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Srsly, this piece is a blast. Thank you so much for showcasing it!
There are other verses however that use the term "star" to mean an angel which has given rise to the misconception that Satan is the morning star. Originally of course Satan was an angelic being (cherub to be exact) whose name was Lucifer but was cast out of heaven. Satan does go by the titles of devil, dragon, old serpent, tempter and many others.
This artwork is merely based on the fictional character by the same name, not an intended depiction of Jesus or Satan.