The Great Divorce
Toward the end of the narrative the terror of the dreaming narrator of remaining a ghost in the advent of full daybreak in heaven is that of the man with his dream of judgment day in the House of the Interpreter of The Pilgrim's Progress. The book ends with the narrator awakening from his dream of heaven into the unpleasant reality of wartime Britain, in conscious imitation of The Pilgrim's Progress, the last sentence of the "First Part" of which is: "So I awoke, and behold, it was a Dream".
The Narrator (it is implied that this is Lewis himself) — main focus of the narrative
George MacDonald — the writer, who acts as guide to the narrator.
And also many other small characters that play some pretty important roles in explaining Lewis' ideas.
Allusions/references to other works
Lewis consciously draws elements of the plot from Dante (The Divine Comedy) and Bunyan; for example, comparing his meeting with MacDonald to "the first sight of Beatrice." He also credits the idea that hell exists within heaven but is "smaller than one atom" of it to his scientifiction readings; travel by shrinking or enlargement is a common theme in speculative fiction, and the narrator alludes to its presence in Alice in Wonderland. In the preface, Lewis explains the origin of his idea that heaven is immutable to the ghosts from hell, referencing an unnamed science fiction work which gave him the