Answer:
Siren, in Greek mythology, a creature half bird and half woman who lured sailors to destruction by the sweetness of her song. They are dangerous creatures.
Protagonists are the good people who work towards the central story goals
Antagonists are the bad people/ enemies who fight the protagonist and work against the central story goals
Minor characters are the ones who help the major characters achieve their goal, but they are not as important as the major characters in the story
Flat characters are ones who do not change from the beginning till the end of the story. They stay the same and do not change their perspective or thoughts.
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Hope this helps!!