<P> An antagonist may not always be a person or persons . In some cases, an antagonist may be a force, such as a tidal wave that destroys a city; a storm that causes havoc; or even a certain area's conditions that are the root cause of a problem . An antagonist also may or may not create obstacles for the protagonist . </P> <P> Societal norms or other rules also may be antagonists . </P> <P> An antagonist is used as a plot device, to set up conflicts, obstacles, or challenges for the protagonist . Though not every story requires an antagonist, it often is used in plays to increase the level of drama . In tragedies, antagonists are often the cause of the protagonist's main problem, or lead a group of characters against the protagonist; in comedies, they are usually responsible for involving the protagonist in comedic situations . </P>

What is the dominant role of the antagonist of a conflict
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