A story needs to have two main characters; they are the . protagonist and antagonist round and static good vs. evil flat and dynamic

protagonist and antagonist

Explanation:

The two main characters that should be present in a story are the protagonist and antagonist.

The protagonist one of the main characters. The protagonist is the person leading a contest, a principal performer in the story. He/She is an advocate or champion during the course of action.

An antagonist is the other character in the story. An antagonist usually opposes the protagonist in a literary work or drama. He/she is an enemy or opponent who antagonizes or stirs.

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