Since Jean Paul Richter used the term Doppelgänger in Siebenkäs (1797), inserting this work in the tradition of the many classic versions of the duality ―Plato, Plautus, Shakespeare, Corneille, Goldoni...―, there have been many recreations of the double as modern myth, cultivated by distinguished authors such as Hoffmann, Poe, Dostoevsky, Maupassant, Stevenson, Oscar Wilde, Pirandello, Borges, Cortázar, Saramago and many others. The contributions of this number reflect the richness of the myth of the double self, one of the most recurrent and fruitful in universal literary history.