One common theme is love against all odds. Since Mako has his own set of challenges and responsibilities in the show, the OC often has to navigate through those to be with him. Another theme is the discovery of self - worth. The OC usually starts as an underdog and through the relationship with Mako, they find their place in the world of the Avatar.
One great place to find 'The Legend of Korra Mako x OC fanfiction' is Archive of Our Own (AO3). There are numerous well - written stories there. Just search for 'Mako x OC' in the 'The Legend of Korra' fandom section. Another option could be FanFiction.net, but the quality can be a bit more variable.
There's this fanfiction called 'Male OC: The Firebending Prodigy'. In this story, the male OC is a firebending genius. The story follows his training under some of the best firebenders in the world. It also shows his interactions with other benders and non - benders, which adds a lot of depth to the story.
One interesting Korra OC fanfiction could be about an OC who has the power to control a unique element not seen before in the Avatar world. For example, an OC that can manipulate light in various ways, like creating illusions or using concentrated beams as weapons. This would add a new dynamic to the existing power system in the Korra universe.
There are those fanfictions where the OC is from a different nation and forms an unlikely friendship with Korra. They then go on a journey to bridge the cultural gaps between their respective nations. For example, the OC could be from the Fire Nation and introduce Korra to some forgotten Fire Nation traditions that are relevant to the current situation in the Avatar world.
Well, there are fanfictions where the OC has a unique backstory. For example, an OC who was once a part of a circus troupe and has acrobatic skills. When she meets Mako, he's initially skeptical of her but as they get involved in the Avatar's adventures, he comes to admire her tenacity. Some fanfictions focus on the romantic aspect right from the start, with Mako being instantly attracted to the OC's kind heart and beauty.
When writing an Avatar Korra x OC fanfic, think about the themes in the Avatar series. Things like balance, power, and identity. Incorporate these themes into your story with your OC and Korra. Give your OC some flaws, because perfect characters are boring. Have them learn and grow throughout the story. For the Korra x OC relationship, add some emotional depth. Maybe they have a shared trauma or a common goal that brings them together. And always be creative and original in your storytelling.
When writing a 'Legend of Korra Mako x OC' fanfiction, it's important to know the 'Legend of Korra' universe well. Research the different cultures, the political situation, and the technology. For your OC, give them a unique voice. If they're from a different nation, they might have an accent or use certain phrases. In terms of the relationship with Mako, create conflict and tension. It could be something as simple as Mako being too focused on his work as a police officer and the OC feeling neglected. Resolve these issues gradually as the story unfolds to make it a compelling read.
There's also 'The Bond with Korra'. This one stands out because it delves deep into the emotional connection between Korra and the reader. It shows how they support each other through tough times, and the writing style makes it a very immersive read.
An interesting Legend of Korra OC fanfiction idea could involve an OC who was born with the ability to control spirits directly, without the need for Avatar - like mediation. This OC could face challenges as people fear their power. Also, an OC that is a bender who has lost their bending due to some accident and has to find a new way to be useful in the world of bending. Maybe they become a great teacher, teaching non - benders how to defend themselves against benders. And then there could be an OC who is a descendant of an ancient civilization and has access to forgotten bending knowledge.