
der Protagonist
protagonist
The main character in a literary narrative, a film, or a play.
Der Protagonist des Romans ist ein junger Zauberer, der die Welt retten muss.
The protagonist of the novel is a young wizard who has to save the world.
protagonist
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protagonist
The main character in a literary narrative, a film, or a play.
Der Protagonist des Romans ist ein junger Zauberer, der die Welt retten muss.
The protagonist of the novel is a young wizard who has to save the world.

leading figure
A leading person or important champion of a movement, idea, or particular field.
Er gilt als einer der wichtigsten Protagonisten der modernen Architektur.
He is considered one of the most important leading figures of modern architecture.
This noun belongs to the N-declension. That means it takes the ending "-en" in the genitive, dative, and accusative singular, as well as in all plural forms. This is a common source of mistakes.
Ich habe den Protagonisten des Romans nicht gemocht.
I didn't like the protagonist of the novel.
You can tell from the context whether a fictional main character or a real person is meant. Words like "Roman" (novel), "Film" (film), or "Geschichte" (story) point to the literary meaning. Terms like "Bewegung" (movement), "Architektur" (architecture), or "Politik" (politics) point to a leading figure.
Der Protagonist des Films ist ein einsamer Detektiv.
The protagonist of the film is a lonely detective.
The word "Protagonist" (protagonist) is used mainly in written language or in formal discussions about literature, art, or history. It belongs to an educated vocabulary.
Die Ausstellung widmet sich den Protagonisten der klassischen Moderne.
The exhibition is dedicated to the leading figures of classical modernism.
hero
Both words can refer to the central figure in a story. „Der Protagonist“ describes this role neutrally, while „der Held“ also suggests admiration, courage, or a positive evaluation. Use „Protagonist“ when you mean only the character’s function in the plot, and „Held“ when the character also appears exemplary.

Der Protagonist des Films gerät am Anfang in große Schwierigkeiten.
The protagonist of the film runs into serious difficulties at the beginning.
Wegen seines Mutes wird der junge Mann im Film als Held gezeigt.
The young man is portrayed as a hero in the film because of his courage.