The Chronicles of Narnia (although we do not learn their surname until "The Voyage of the Dawn Treader"), and eventually become Kings and Queens of Narnia reigning as a tetrarchy. Although introduced in the series as children, the siblings grow up into adults while reigning in Narnia. They go back to being children once they get back to their own world, but feature as adults in "The Horse and His Boy" during their Narnian reign. All four appear in "The Lion, the Witch, and the Wardrobe" and "Prince Caspian"; in the latter, however, Aslan tells Peter and Susan that they will not return, as
The Chronicles of Narnia "Narnia" stories. Lewis maintained that the "Narnia" books were not allegorical, preferring to term their Christian aspects a "supposition". "The Chronicles" have, consequently, a large Christian following, and are widely used to promote Christian ideas. However, some Christians object that "The Chronicles" promote "soft-sell paganism and occultism" due to recurring pagan imagery and themes. In later years, both Lewis and the "Chronicles" have been criticised (often by other authors of fantasy fiction) for gender role stereotyping, though other authors have defended Lewis in this area. For example, Lucy gets a healing potion and a dagger, while Peter gets a sword.