In "The Cask of Amontillado" compare and contrast Fortunado and Montresor. What are some of their actions and utterances to prove this evidence?

Fortunado and Montresor are both very prideful men, who are willing to go to great lengths to maintain their honor and reputation.  Montresor reveals his wounded pride from the get-go, as he states that he had borne a "thousand injuries" from Fortunado, and that he would, as a result of insult, "punish with impunity" to defend his honor.  Then, he enacts his evil plan of revenge, going to great lengths to get rid of the insulting Fortunado.  Montresor also shows pride in himself  when he brags about how his family name has been around for ages, and how they are "a great and numerous family."  He goes on to proudly explain his family's coat of arms.

Fortunado is also a very prideful man bent on maintaining his reputation.  For him, it is his reputation as a fine wine expert that he must defend.  And, it is that pride that leads to his death, because it prompts him to follow Montresor deep into the catacombs, egged on by Montresor's threats to take his wine to another man (Luchesi) to be tasted.  He refuses to turn back, insisting that he must taste the Amontillado for himself, refusing to admit that Luchesi might have a "taste that is a match" for his own skill.

Both men are also wine-experts; Montresor states,

"I was skilful in the Italian vintages myself, and bought largely whenever I could,"

comparing himself to Fortunado in skill.

The differences between the two fall mainly in personality traits.  Fortunado is a bit of a light-hearted, harmless fellow who is filled with goodwill and a bit of obtuseness.  Poe emphasizes his rather absurd character by having him wear a jester's hat, and by having him be a bit drunk.  It is hard to believe that Fortunado, with much forethought, purposely and maliciously insulted Montresor.  He seems like an easy-going guy overall.  Montresor is sinister, malicious, cunning and clever.  He sets up the entire scene, plans it out, cleverly prompts Fortunado on and on, and has the evil intent to kill him. He is much more harmful and dangerous than the bumbling Fortundado.

I hope that those thoughts help; good luck!