- Captain America: The Joker

Captain America: - Real identity: Steve Rogers. - Background: A physically weak soldier who was transformed into a superhuman by an experimental serum during World War II. He is characterized by his strength, speed, and endurance, in addition to his high combat skills. He is known for his high morals and firm belief in justice. - Importance: A symbol of hope and patriotism, he is the leader of the Avengers team.
The Joker: - Background: A major villain in the DC Comics universe, known for his madness, ability to plan, and stupidity. Not much is known about his background, and its details vary according to the stories. He is known as a major enemy of Batman. - Characteristics: He is characterized by his evil laugh, his love of chaos, and his lack of any morals. He uses crime and deception to achieve his goals. - Importance: He is considered one of the most famous supervillains in the history of comic books, and symbolizes chaos and madness.