Montresor is the main character and the protagonist in "The Cask of Amontillado". The story is told from his point of view and centers around his plan to exact revenge on his supposed friend Fortunato, whom he lures into the catacombs with the promise of tasting a rare vintage of Amontillado wine. As the story progresses, the reader becomes increasingly aware of Montresor's twisted and vengeful nature.
One quote that highlights Montresor's character is when he states, "The thousand injuries of Fortunato I had borne as I best could, but when he ventured upon insult I vowed revenge" (Poe). This line shows that Montresor is motivated by the perceived insults from Fortunato, and he feels that he must exact revenge for them. Additionally, Montresor's obsession with revenge is evident in the way he plans and carries out Fortunato's murder, indicating a dark and malevolent nature.
Furthermore, the story's setting plays an important role in highlighting Montresor's character. The catacombs are dark, damp, and filled with skeletons, creating a macabre atmosphere that reflects the twisted nature of Montresor's actions. The setting also serves as a metaphor for the depths of Montresor's vengeful desires and the lengths to which he is willing to go to satisfy them.
Overall, "The Cask of Amontillado" is a chilling tale of revenge and manipulation, with Montresor serving as the main character and protagonist. Poe's masterful storytelling and vivid descriptions of setting and character make the reader truly feel the darkness and malevolence of Montresor's character.