The antagonist opposes the main character.
The main character having the conflict is called the protagonist.
the antagonist
Antagonist
antagonist
A main conflict is the main problem that a character has in a story, or the main problem of the story
plots centered on a moralist conflict in which the main character were archtypes of good vs evil
The main character is the protagonist, so his opponent is the antagonist.
antagonist
External conflict
plots centered on a moralist conflict in which the main character were archtypes of good vs evil
No, the protagonist is almost always the main character (but not always). And it is true that he can be in conflict with himself (inner doubts, fears, duty-bound etc) but most often it is the antagonist that is in conflict with the main character.
A character who is opposed or competes the main character. * is called the antagonist while the main character is called the protagonist,