Sheldon Bach was interested in monsters as “the exotic inhabitants of that mental territory that stretches between the self and the other, between the past and the future, between the known and the unknown.” (Language of Perversion pp. 136-137) He was primarily interested in the maternal relationship as the breeding ground of monsters, but briefly pointed to the importance of the paternal relationship as well. By looking at clinical material and the life of J.R.R. Tolkien, I will develop Bach's thoughts about monsters in two directions. First, I will discuss the importance of his language that calls on myth and the arts rather than scientistic terms, thus not only producing clear writing but also saying something essential about clinical work: To help patients with their monsters, it is necessary to join them in transitional space with its “exotic inhabitants.” Second, while maintaining the centrality of the maternal relationship, I will further develop the importance of the paternal relationship in creating monsters.