Definition: "Anderer," in Norse mythology, refers to a kindred spirit or divine entity who dwells within human souls. They are known as "Arendi's" in Greek mythology, which includes the myth of Odin's sister, Sigmund, and her Anderer, Ida. In Norse religion, the concept of the 'Anderer' is often intertwined with the worship of Odin and the creation of the world (Horsa). They are seen as guides for humans to understand their true nature and destiny.