In C.S. Lewis’s The Screwtape Letters, Screwtape’s nephew is named Wormwood.
The 1942 book is presented as a series of letters from Screwtape, an experienced demon, to his inexperienced nephew Wormwood. The letters discuss how Wormwood should tempt and mislead a human referred to as “the Patient.”
Lewis uses the imagined correspondence to satirize human weaknesses and to examine themes such as pride, distraction, resentment, and spiritual self-deception. The unusual perspective lets the book criticize destructive habits without presenting them as sound advice.
Wormwood is not a human hero or a character from Narnia. Names such as Eustace and Puddleglum belong to the Narnia books, while Ransom is the protagonist of the Space Trilogy. Those separate fictional worlds are a common source of mix-ups.