A Mary Sue is a type of fictional character, usually a young woman, who is portrayed as free of weaknesses or character flaws.[1] The character type has acquired a pejorative reputation in fan communities,[2][3][4] with the label "Mary Sue" often applied to any heroine who is considered to be unrealistically capable.[3]
In Paula Smith's 1973 parody short story "A Trekkie's Tale", the character Mary Sue was written to satirize the type of idealized female characters that were widespread in Star Trek fan fiction at the time. These were often depicted as beautiful young women possessing special abilities or physical traits, universally beloved by the more established characters, and playing a central role in the story despite not appearing in the source material.[3]
Mary Sue stories are often written by adolescent authors[5][6] and may represent the author's self-insertion into the story,[3][7][8] both in fan fiction and commercially published fiction. Less commonly, a male character with similar traits may be labeled a "Gary Stu" or "Marty Stu".
OED 2017
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