Character analysis of Montresor in "The Cask of Amontillado."

Montresor is portrayed as a vindictive, calculating individual who takes extreme precaution in formulating the perfect revenge on the unsuspecting Fortunato. Montresor mentions that Fortunato has caused him a thousand injuries, and he resolves to get revenge. However, Montresor says that it is imperative to "punish with impunity" and proceeds to formulate a foolproof plan of vengeance. Montresor mentions that he maintains an amiable appearance around Fortunato to prevent him from becoming suspicious and approaches him during the carnival season. Montresor's ability to maintain a false personality around Fortunato indicates that he has a talent for dissembling. Montresor also reveals that he is manipulative by appealing to Fortunato's pride when he mentions that Luchresi would be able to identify whether or not Montresor purchased authentic Amontillado—knowing that Forunato will volunteer to taste the wine.
As Montresor leads Fortunato to his home, he mentions that he told his servants that he would not be home, knowing that they would leave the house. Montresor's forethought and insightful understanding of human nature indicate that he is a perceptive individual. When Montresor leads Fortunato deep into the catacombs, he ends up shackling his enemy and begins building a wall around him. Montresor's malevolent nature indicates that he is a ruthless man. The nature of Fortunato's fate is particularly disturbing and portrays Montresor as a cruel, callous murderer. The fact that Montresor has not told anyone about his crime in fifty years indicates that he is a discreet man who knows how to keep a secret.