A Mary Sue or Gary Stu (male form) is often either a perfect or almost perfect character. They often appear in fan fictions and are sometimes based on the author themselves.

If the Mary Sue or Gary Stu is based on the author, they normally have qualities that the author wishes they had.
For example, they wish to be more popular or better looking.

When a Mary Sue or Gary Stu is written into a fan fiction, it will often cause canon (original) characters to become OOC (out of character). They often have terrible, grief-filled pasts and 'need' a certain canon character to understand them or they have a past that is the exact same or very similar to a canon character's.

Mary Sues and Gary Stus are mostly found in new writers or written in fan fictions by more exprerienced writers for fun.

They also tend to have either very common or extremely strange and exotic names or, if they are made for fun, will sometimes have the name Mary Sue or Gary Stu.
Mary Sue had a horribly tragic past.
When she was only a baby, her parents had been murdered by Voldemort because they had been trying to protect her.

However, when Voldemort tried to kill her it backfired and left her with only a scar.
by ManamixChan December 29, 2010
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The Mary-Sue mothership takes on the same concept of Mary-Sue (or Gary-Stu, depending on the case), but this term stands for both the Mary-Sue and the Suethor who created the Mary-Sue in question.

In this case, however, the 'pairing' between the Mary-Sue and the canon character will have gathered a club of fans who follow the Suethor's every art or literature featuring the Mary-Sue and canon character, of whom would, 99.9% of the time, be turned OOC (out of character).

The Suethor's avid fan club becomes very loyal to the Suethor, giving the Suethor art gifts featuring the Mary-Sue in scenes with the canon character in their own artistic style.

Mary-Sue motherships are more than likely to be found at DeviantART, but some Suethors show off the work of their followers at Photobucket or other image site.

If there is ever a setting where a Gary-Stu character is involved, it is termed the "Gary-Stu Death Star."

The numerous images featuring the Mary-Sue and canon character fighting against the world or having babies can be termed "Mary-Sue motherload."
"Holy crap, I just spotted another Mary-Sue mothership. M-S MOTHERSHIP! TWELVE O'CLOCK!! IT'S HEADED RIGHT FOR US!!"

At the very heart of a Mary-Sue mothership is an insecure individual who is angsty and only wants to elope with a towdally osm fictional character who will marry them, give them babies, and live happily ever after. The End.
by Radiant Chaos April 16, 2010
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A character/OC that is invincible, almost god like, to an extent that is extremely unlogical ans annoying
"He was such a Mary Sue when he got stabbed in the heart but pretended it was nothing and walked away"
by rednaxela July 18, 2016
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There are many OCs that are terrible, the most common are the Mary Sue, the Victim, the Not-OC and the Demon.

The Mary Sue is an absolutely perfect OC. They usually have bad pasts, never get angry, be skilled in every skill, have magical powers, be over powered, and never loses. They usually have the rarest abilities and are soooo unique. (Not at all).

The Victim is an attention whore OC. Someone with usually a cheesy 'cruel' and sad back story. They probably had something awful happen to them, so bad it affected them forever.

The Not-OC is someone who completely clones either another OC or what the OC is parodying.

The Demon is one of the worst. Terrible past, ruler of other dimension or some crap, having powers that can destroy the whole world, being totally evil, having the colors black and red be everything about them. They never lose ever. Seems bad? They are!
* Mary Sue - Name: Cyrus/Gender: Female/Powers: All of them/Appearance: Huge, pretty/Personality: Calm, Smart, Strong, Powerful, Friendly/Backstory: Parents died, left out on road to die, picked up by abusive man, beaten every day, escaped, became ultra goddess
* The Victim - Name: Angel/Gender: Female or Male/Powers: Ability to fly and kill self instantly/Appearance: Blue eyes, purple hair, short/Personality: Sad, scared, afraid, violated, worried/Backstory: Parents killed, killers raped her, killers almost killed her, she escaped, didn't bother go to hospital, left in forest, animals ate her up, she survived, she lives today on the street
* Not-OC (MLP Example) - Name: Rainbow Slash/Gender: Female/Powers: Flying, sonic rainboom/Appearance: Rainbow hair and tail, blue fur/Personality: Arrogant, nice, loyal/Backstory: Caused first Sonic Rainboom (By the way this is completely Rainbow's personality in the show if you didn't know)
* The Demon - Name: Snapthrout/Gender: Male/Powers: Summons demons, shadow powers, fire breathing, flying/Appearance: Red eyes, black hair, battle markings, scars, red and black wings/Personality: Totally evil, hates everyone/Back Story: Killed in real world, became demon king)
by TheMakerOfWords December 25, 2014
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A Mary Sue is a term used to describe a original charecter from a story, anime, game, etc. that is unoriginal, stupid, or fucked over in multiple ways. Some things that could get you oc called a Mary Sue: Stupidly dark backstory, overpowered powers (Immortal, Insta kill, etc.), a twenty inch dick, and more.
Person 1: My oc's least favourite thing is her terrible back flashes.

Person 2: FUCKING MARY SUE
by Dyslexic_Apple September 6, 2016
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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
by ~Shinku~ December 31, 2010
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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.
Fan-fiction writer:
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.

Random Guy:
MARY-SUE!MARY-SUE!
by Muffins4C August 11, 2011
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