Moorcock's work is complex and multilayered. Central to many of his fantasy novels is the concept of an "Eternal Champion", who has potentially multiple identities across multiple dimensions of reality and alternative universes. This cosmology is called the "Multiverse" within his novels and independently mirrors the concept which arose in particle physics in the 1960s and is still a current theory in high energy physics. The Multiverse deals with various primal polarities such as good and evil, law and chaos, and order and entropy.