Published: May 23, 2024 | Last Updated: May 22, 2025
Mary Sue Definition & Meaning
A “Mary Sue” is a fictional, often female character portrayed as unrealistically perfect. Mary Sues often lack flaws (or their flaws don’t impede them), often achieves their goals with little to no effort, is universally liked and beautiful, faces minimal real adversities, and may possess extraordinary abilities or talents that set them apart. These traits often make the Mary Sue character implausible and unrelatable.
The derogatory term “Mary Sue” was first popularized in the 1970s in a satirical Star Trek fan fiction piece by Paula Smith, in which a fifteen-year-old half-Vulcan single-handedly saves the Enterprise. The term’s male counterpart is sometimes called ‘Gary Stu’ or ‘Marty Stu.’
Characteristics of a Mary Sue
Mary Sue characters often display extraordinary abilities or talents without plausible training or experience. They excel in various fields such as combat, intelligence, or social interactions, far surpassing other characters who are more established or skilled within the narrative.
Example: Rey (Daisy Ridley), from the Star Wars sequel trilogy, has been frequently cited as a Mary Sue. Critics argue that her rapid mastery of the Force, combat skills, and piloting with minimal training exemplify Mary Sue traits. Supporters, however, highlight her background and the narrative context to argue against this label, noting her struggles and growth.
Mary Sue characters usually possess exceptional attractiveness, with physical features that attract admiration from others. Their charm and charisma often lead to instant rapport and unearned trust from allies and adversaries.
Example: Bella Swan (Kristin Steward) from the Twilight series is often considered a Mary Sue due to her beauty, rapid acceptance and admiration within the vampire community, her lack of significant flaws, and because she quickly gains the affection and trust of the vampire Edward Cullen and the werewolf Jacob Black, leading to a love triangle.
A significant aspect of a Mary Sue is the absence of substantial obstacles or flaws. Any challenges they face are quickly overcome, often through convenient plot devices or deus ex machina. This can result in a narrative lacking tension or growth, as the character doesn’t develop meaningfully.
Example: Captain Marvel/ Carol Danvers (Brie Larson) from Marvel Cinematic Universe exhibits extraordinary abilities such as superhuman strength, energy projection, and flight. Because of her immense powers, any challenges are swiftly overcome. This leads to a lack of tension in her narrative, as her overwhelming capabilities make it difficult for her to face significant threats or personal growth compared to other characters in the MCU.
The Problem with Mary Sue Characters on Film Narratives
The presence of a Mary Sue often leads to narrative weaknesses, as the character’s lack of realistic struggles or development can render the story predictable and unengaging.
As humans, we typically prefer characters who grow and evolve through their experiences, facing and overcoming believable challenges.
Too-perfect characters alienate us, making it difficult to relate to or invest in them because we find the character unrelatable or the stakes unconvincing. Sure, Captain Marvel engages in external conflicts (like the Avenger’s battle against Thanos), but she portrays no real inner conflict, which makes her character deeper and more interesting.
The Mary Sue Self-Insert
The terms “Mary Sue” and “self-insert” are related but not synonymous, and I think it’s important to understand the difference since they’re sometimes used interchangeably.
A “self-insert” is a character that an author intentionally or unintentionally models after themselves. This character might share the author’s thoughts, experiences, or traits. Self-inserts are not inherently problematic and can be well-written and complex.
The term does not necessarily imply that the character is perfect or unrealistic. A self-insert character can have flaws, undergo significant development, and face challenges like any other well-crafted character.
Early fan-fiction Mary Sue characters were often the author’s idealized version of themselves, i.e., a self-insert. While this can be harmless in fanfiction (I mean, who hasn’t imagined themselves as the hero in a favorite fictional universe?), it becomes problematic in fiction intended for a broader readership.
Example: Think about Hermione from the Harry Potter series, who is flawless and possesses all the best traits of all the four houses at Hogwarts. J.K. Rowling has described her as “a bit like me. She is an exaggeration of how I was when I was younger” (at the Edinburgh Book Festival, Sunday, August 15, 2004.)
Good fiction requires conflict, both external and internal. A perfect character can deprive the story of meaningful internal conflict, making it shallow. Readers can see themselves in flawed characters who overcome their weaknesses, as it mirrors real human experiences and offers hope for personal growth.
Overlap:
A self-insert character can be a Mary Sue if the author idealizes themselves to the point of creating an unrealistically perfect character. However, not all self-insert characters are a Mary Sue. An author can create a well-rounded, flawed, and relatable self-insert.
So, while a Mary Sue can sometimes be a self-insert, a self-insert is not always a Mary Sue. The key difference lies in the character’s level of perfection and realism.
Crafting Believable Characters: Avoiding the Mary Sue Pitfall
Embrace Flaws and Limitations
Crafting well-rounded characters involves giving them realistic flaws and limitations. These imperfections make characters more relatable and provide growth opportunities. For example, Tony Stark’s (Iron Man) arrogance and personal struggles add depth to his persona, making his story compelling.
Develop Skills and Abilities Gradually
Characters should acquire skills and abilities through experience and training. This progression adds credibility and allows us to witness and invest in their development. Katniss Everdeen from The Hunger Games is a prime example, as her knack for archery and survival is well-established through her backstory.
Present Meaningful Challenges
Characters should face credible challenges that test their abilities and resolve. These obstacles force them to adapt, grow, and sometimes fail, creating a more dynamic and captivating narrative. For instance, Harry Potter’s constant struggle against Voldemort and his fears make his victories meaningful.
Create Complex Relationships
Developing complicated relationships with other characters adds depth and realism. Characters should not be universally loved or hated without reason. Interpersonal conflicts and alliances should evolve naturally, reflecting the character’s growth and the story’s progression.
Summing Up
Understanding the Mary Sue trope can help you create interesting and relatable characters because you know what to avoid.
Read Next: Want to write characters that feel real on the page?
Start with our Free Screenwriting Course — a complete foundation in structure, dialogue, and building compelling characters.
Then browse all character development articles — from internal conflict and arcs to ensemble design and protagonist logic.
Or return to the Screenwriting section for formatting, story structure, and writing tools.
