A Mary Sue is a fictional character in fanfiction (mostly in fan fiction, a perojative form and one of ficiton) who is lacking flaws (being perfect), over-idealized, unrealistic, and acts as a wish-fulfillment fantasy for the author. The practice of writing a character as a Mary Sue is almost universally looked down upon and considered one of the worst traps a writer can fall into. Many Mary Sues are self-insertions.

Despite being generally associated with fan fiction, professional and original works have had characters criticized as Mary Sues, such as Wesley Crusher of Star Trek: The Next Generation.


Note that all examples are highly subjective and in some cases controversial.

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