Are heroes and villains mutually exclusive roles or can a hero commit a villainous act and can a villain act heroically?

Part 1: Are heroes and villains mutually exclusive roles or can a hero commit a villainous act and can a villain act heroically? Give examples referring to one contemporary (roughly from our time) movie or book, such as The Avengers, Lord of the Rings, Black Panther, Lion King, Thor, Spiderman, Wonder Woman. Part 2: Provide an example of an archetype using the same film or book to which you referred for the above question. Try searching the words “archetype” combined with the name of the film or book of your choice. Example: Film: Batman Archetype: Robin as the “Sidekick” archetype. Example: Film: Hunger Games Archetype: Peeta as the “Love Interest” archetype