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character (in a play, novel, film, etc.); dramatis personae
登場人物が多い小説だ。
It is a novel with many characters.
登場人物の心理描写が見事だった。
The psychological depiction of the characters was splendid.
物語の登場人物に感情移入してしまった。
I found myself empathizing with the characters of the story.