Used to negatively describe a female character, usually in a fanfiction (but sometimes in a Tv show or movie,) that can be just be very annoying because they are too perfect or there aren't any/many weaknesses in their personality. If they are a side character, they can sometimes take the spotlight. If they are a main character, it can make an uninteresting story. Sometimes turn into a joke. Also look at Marty-Stu.
This is a prime example of a Mary-Sue that I found on a writers page on fanfiction.
"Michelle Isabella Fenton
Danny Phantom's thirteen-year-old sister, who is two years younger than him. She is Danielle Phantom's identical twin and Nat Wolff's girlfriend. She is a Harry Potter style witch and a Aquamarine style mermaid. Michelle has dark brown hair and aquamarine blue eyes. She is an Avatar style water and airbender. Michelle is 25 percent Twilight vampire, which explains why people think she looks perfect. Her hair is elbow-length and she is 5'3. In her power form, she has a white bikini top, full white knee-length skirt, a diamond on the very center or her forehead near her eyes. In this form, Michelle wears silver sandal heels. Her hair had white streaks in it. Two streaks of hair that are about 3 inches wide are curled and pinned at the center of the back of her head, towards the nape of her neck. Michelle is also very good with arrows.
Personality: Sweet and innocent. Very loving. Dispite how it may seem like an act, Michelle's personality is pure. Can be a bit protective at times, but only for the better.
Aliases: Lena Yue"
Doesn't that character sound kinda annoying?
A female character who is so perfect that she is annoying. The name originated in a very short Star Trek story that mocked the sort of female characters who showed up in fanfiction. It usually refers to original female characters put into fanfiction, but can refer to any character.
Mary-Sues are characters who are usually extraordinarily gorgeous, amazingly talented, unusually powerful, and exceedingly attractive to whoever the author has a crush on. They often possess ridiculously fancy and pretentious first names -- Angel, Raven, Jewel, Lorelei Bianca Julia Marizza Snape -- and are very, very annoying.
Mary-Sue is often abbreviated to 'Sue.' The male equivelant is either Marty-Stu or Gary-Stu.
Your Buffy fanfic has a problem. Her name is Alayne Lorelei Gemma Jeshika Shanna, she has violet eyes and raven hair, curves in all the right places, is more powerful than Willow and a better fighter than Buffy and Faith combined, AND Spike is in love with her. She's a total Mary-Sue, and she's really annoying!"
A negative reference to a female character
commonly used by beginning writers in their Fan-fiction.
Most times, the "Mary-Sue" is based upon the author.
She is unusually perfect and more advanced, also befriends
or becomes romantically entangled with the author's favorite
character/characters from the series. Because she is more
superior than the other characters in the work, she mainly
becomes the focus of the fan-fiction, thus ruining whatever
the fan-fiction was about.
As stated above, the name of the character referred to as
the "Mary-Sue" does not matter.
A person who acts smug or superior to a friend or comrade.
"Cassandra was a Mary-Sue in DD's version of Harry Potter VI."
"Don't be a Mary-Sue, you wanker!"
An original character (fem.) in fanfic or an original story, usually on the internet, who is far superior to all other characters. She is typically beautiful, intelligent, kind, and in all other ways "perfect". She usually serves as an important part in a pivotal plot element (ie: a prophecy) and becomes romantically involved with the author's favourite character in the story. The internet fiction world runs rampant with these characters.
dracosluvur: My character's name is Alienne Raven Jewel Sassandra Moonflower Romance Shimmer Honeybeam, she came to Hogwarts after being separated from her family in the U.S. and sold into illegal slavery in Japan, she's fluent in both languages and is part Fae. She has snow-white skin, black hair and sparkling eyes that change colour. She's tall, thin and busty, she fills in as the Charms professor sometimes and doesn't really have a house because she's just that unsortable so she has her own luxury room in one of the towers. Almost the entire male population adores her, staff and students, and she gets perfect marks and it figures that she is the one who actually kills voldemort.
SatiricalBanshee: AGH!DUCK AND COVER! MARY-SUE!
A female character that is annoying because she is too perfect.
Usually used in RPGs and stories
(RPG) Stop being a Mary-Sue... you have like 102384028 powers already O.o
A gorgeous, athletic, talented and intelligent girl who has every man on earth chasing after her. Even though she is beautiful, she will deny this. Almost always on the good side. If not, she's that overpowered hottie on the other side. Unusually attractive, and is related or in a relationship with any Canon character.
So perfect that it's very annoying.
Used most commonly in RPGs, Fan Fictions etc etc.
Her male counterpart is Gary-Stu or Marty-Stu.
WARNING If you character is named Mary Sue but does not have these traits, the name does not exactly matter. It is okay to give you character the name, Mary Sue.
Her name is Celestia Destiny Raven Violet Shimmer Moondancer. She has long raven black hair and beautiful pale skin. Her eyes are a sharp emerald but they change to a glistening red when she is mad. They change blue when she's happy too! She's very curvy and has the best taste in fashion. However she denies all of this and in such a cute, bashful way. She was such a talented witch, that the second she was born, Voldemort hissed in agony. She is sent to Hogwarts at age 6 and secretly trained by Dumbledore until she is old enough to go to Hogwarts. She then gets Draco Malfoy and half of the male population in Hogwarts to go after her. When Voldemort appears and asks her out, she refuses but shakes his out of pity. Then he turns good and we all live happily ever after. The End.