One common trope is the OC being a new student or outsider in the fanfiction world. For example, in a Harry Potter fanfic, an OC might be a transfer student to Hogwarts. Another is the OC having a special power or ability that sets them apart. They could be the only one who can communicate with a certain magical creature. Also, the OC might become a love interest for a canon character, like an OC falling in love with Sherlock Holmes in a Sherlock fanfiction.
A prevalent trope is the OC being a long - lost relative of a canon character. In a Lord of the Rings fanfic, an OC could be a distant cousin of Aragorn. This adds an interesting dynamic as it ties the OC into the existing lore. OCs can also be antagonists. They might oppose the main characters' goals, perhaps an OC in a Marvel fanfic who has a different view on how superheroes should operate and tries to stop the Avengers from their usual ways.
Often, OCs in fanfiction are used to fill plot holes. Say in a Star Wars fanfic, if there's a need for a character to have a certain skill that no existing canon character has, an OC can be introduced with that skill. Some OCs are also created as a sort of self - insert, where the author imagines themselves in the fanfiction world. This can lead to OCs having very relatable and human - like qualities compared to the more 'larger - than - life' canon characters.
Some common tropes in villain oc fanfiction include the 'seductive villain' trope. This is when the villain uses their charm or attractiveness to manipulate others. It can add an interesting dynamic to the story. The 'vengeful villain' trope is also quite common. They are seeking revenge for some past wrong done to them. And then there's the 'evil legacy' trope. The villain oc is following in the footsteps of an even greater evil from the past, and they are trying to live up to that reputation or complete some unfinished evil business.
One common trope is the 'forbidden love' between the OC and Dracula. The OC, whether human or vampire, finds themselves drawn to Dracula's dark allure despite the danger. Another is the 'newbie in the vampire world' trope, where the OC is a newly turned vampire trying to navigate the rules and power dynamics in Dracula's domain.
One common trope is the 'lost kid' trope. The Kid OC is lost in Gotham and Batman takes them under his wing. Another is the 'unexpected help' trope, where the Kid OC has a special ability that helps Batman solve a case he was struggling with. And the 'innocent perspective' trope, where the Kid OC sees the dark world of Gotham in a different, more innocent way than Batman.
In Kingdom Hearts OC fanfiction, a popular trope is the 'Mysterious Past'. The OC has a past that is slowly uncovered throughout the story, often involving a connection to a great evil or a long - lost prophecy. The 'Forbidden Love' trope also appears sometimes, where the OC falls in love with a character that they shouldn't, perhaps a Heartless or a character from an opposing side. Additionally, the 'Chosen One' trope is common, with the OC being the only one who can save the Kingdom Hearts universe from a new and greater threat.
Well, in Gundam male OC fanfiction, you often see the 'Lost Legacy' trope. The male OC discovers that he has a connection to an ancient or forgotten part of Gundam history, like a lost Gundam technology or a long - dead hero. Another common one is the 'Redemption Arc' for a character who has made mistakes in the past. The male OC might have been on the wrong side of a conflict initially but then sees the error of his ways and tries to make amends. And there's the 'Outsider Who Becomes a Hero' trope, where the OC is not from the main group but ends up being crucial to their success.
One common trope is the 'forbidden love' angle. Since Thranduil is a king, there could be rules or social hierarchies that make a relationship with an OC difficult. Another is the 'outsider' trope, where the OC is not an Elf and has to navigate the Elven world while falling for Thranduil. The 'saving each other' trope is also popular. Maybe the OC saves Thranduil from a dangerous situation, or vice versa, which then sparks the romance. And there's often the 'slow - burn' romance, where their feelings develop gradually over time.
The 'slow - burn relationship' is also very popular. The OC bodyguard and Lelouch start off as just professional acquaintances but over time, feelings develop. This can be shown through small moments of kindness or shared secrets. Another trope is the 'protector in disguise' where the bodyguard has to pretend to be something else in order to better protect Lelouch, like a student at his school.
One common trope is the 'gamer - in - a - strange - world' concept. The OC, being a gamer, finds themselves in the Bleach universe and has to adapt. Another is the 'level - up' trope. Just like in games, the OC gains power and abilities as they progress through the story. For example, they might start as a weak character and gradually become a powerful Soul Reaper or Arrancar. The 'unique - ability - from - gaming' trope is also popular. This is where the OC has an ability that is related to their gaming skills, like being able to analyze an opponent's moves like it's a game strategy.
One common trope is the 'fish out of water' situation. For example, if the OC is from a different time or place than the canon world, like an OC from modern times ending up in Middle - earth in a Lord of the Rings 'oc x cannon fanfiction'. Another is the 'love at first sight' trope, where the OC and the canon character fall for each other immediately. It's often used to quickly establish a relationship in the story.
One often - seen trope is the 'oc with a special power'. This power can either be a threat or an asset to the Akatsuki. It creates interesting dynamics as the Akatsuki members might want to use the oc for their power or protect them from others who would. Also, there's the 'redemption arc' trope for the Akatsuki through the oc's influence. The oc might make one or more of the members question their actions and seek a different path.