They could use technology. For instance, they could have special grappling hooks or stun devices. This would help them in combat and mobility.
By training their body to the extreme. They could become super - fit and strong, and also master various martial arts. Their fighting skills could be on par with or even better than some heroes with quirks. Also, they could study the quirks of villains and heroes alike, finding weaknesses and using that knowledge to their advantage in battles.
A quirkless vigilante in My Hero Academia fanfiction would likely have a very different origin story compared to the typical hero. They could have been bullied or discriminated against because of their lack of a quirk. This would fuel their desire to prove themselves. They might start small, like stopping petty crimes in their neighborhood. As they gain more experience and confidence, they could take on bigger threats. Their lack of a quirk would also make them more relatable to the readers, as most of us are 'quirkless' in the real world. And their journey from being an unnoticed figure to a respected vigilante would be a great story arc.
One great 'My Hero Academia' quirkless badass fanfiction is 'The Quirkless Prodigy'. In this story, the main character uses their intelligence, martial arts skills, and sheer determination to rival the quirk - having heroes. It's really inspiring to see how they overcome the odds in a world that seems to be all about quirks.
I really like the fanfic 'Izuku: The Quirkless Hero'. In this story, Izuku forms a special bond with some of the underdog characters. They work together to create a new style of heroics that doesn't rely on quirks. It also explores his relationship with All Might in a different light, as All Might becomes more of a mentor in non - quirk - related areas.
One possible story could be Izuku proving himself in combat training without a quirk. He could use his intelligence and strategic thinking to outwit his classmates with quirks. For example, he might study their weaknesses in advance and set up elaborate traps during the training exercises.
The quirkless cop in the fanfiction could develop in several ways. Firstly, he could build strong relationships with other characters. For example, befriending a hero who respects his tenacity. This friendship could give him more exposure to the hero world and new opportunities to grow. Secondly, he might face a major crisis that forces him to dig deep and find hidden strengths within himself. Maybe he has to take on a powerful quirk - using villain alone. Through this, he could develop not only his physical and mental strength but also his strategic thinking. Lastly, his development could also involve changing the perception of those around him, from being seen as a liability to an asset in the fight against crime.
The storyline could be about a quirkless cop who overcomes the odds. In a world full of quirks, he might use his wits and training. He could be solving crimes that are related to quirk - using villains. His journey could show that you don't need a quirk to be a hero.
One great fanfic in this genre is 'Quirkless in a Quirked World'. It really delves into how Izuku, being quirkless like Saitama in OPM (in the sense of starting from a disadvantaged state), overcomes challenges. The story shows his determination and how he adapts Saitama - like training methods to become a great hero in the My Hero Academia universe.
First, for your My Hero Academia Vigilante OC in fanfiction, consider their motivation. It's important. Are they fighting for revenge, or to protect a certain group of people? For example, if they had a family member who was wronged by a villain and the heroes didn't do enough, that could be a strong motivation. Next, when it comes to their skills, don't just rely on their quirk. They should have some combat training or street - smart skills. Like being able to quickly assess a situation and come up with a plan. And finally, their relationships with other characters can add depth. Maybe they have a begrudging respect for some heroes while being at odds with others.
In fanfiction, a quirkless Deku often has to rely more on his wits. Canon Deku got One For All, but in fanfic, he has to find other ways to be strong. For example, he might study different fighting styles more intensively.
Unique skills and strategies can also make it stand out. In some fanfics, the quirkless character might be a master of stealth or a brilliant tactician. They use these non - quirk abilities to outwit their opponents. It gives a fresh perspective on the 'My Hero Academia' world, as we usually see quirks as the main source of power.