"Shadow Moon" is a fictional character from the novel "American Gods" by Neil Gaiman. He is a man who is released from prison just before the death of his wife, Laura Moon. As he navigates his grief, he becomes embroiled in a conflict between the old gods and new gods of America. In the story, Shadow is recruited by Mr. Wednesday, a mysterious figure who represents the old gods. Throughout his journey, Shadow grapples with themes of identity, belief, and the nature of reality, ultimately discovering his own strength and purpose in a world filled with myth and magic.