One idea could be an OC who has a unique fighting style that surprises all the Smash Bros characters. For example, an OC that can manipulate time during battles, freezing opponents momentarily or speeding up their own attacks. Another could be an OC from a different dimension who enters the Smash Bros world to find a way to save their own realm. They would have to learn the rules of the Smash Bros battles and form alliances with some of the characters.
Give your OC a distinct personality trait. For example, if they're extremely confident, it can lead to interesting interactions with other characters who might be more reserved. Also, a unique appearance helps. Maybe they have a special color scheme or an unusual weapon.
One idea could be an OC from a relatively unknown game getting invited to the Smash Bros universe. They have to learn the ropes of the unique fighting style there. Another could be an OC who has a special power that disrupts the balance in the Smash Bros world, causing both chaos and new alliances among the characters.
A memorable OC for Super Smash Bros fanfiction can be created by focusing on their flaws. Just like real people, characters with flaws are more relatable. Maybe your OC is overconfident and this gets them into trouble during battles. Their growth throughout the fanfiction can then be centered around overcoming these flaws. Additionally, give them a distinct voice, whether it's a certain accent or a unique way of speaking that sets them apart from the other characters.
Black Widow would rely on her agility and combat skills. She could have quick, multi - hit attacks like some of the faster characters in Smash Bros. Her special moves could include things like her Widow's Bite for a stun effect. Captain America, with his shield, could have a good balance of offense and defense. His shield throws could be ranged attacks, but he also needs to be vulnerable when he throws it, like in the actual Smash Bros. game where characters are exposed after certain attacks. This way, his power is not too overbearing.
Think about their fighting style. A memorable OC might have a fighting style that combines different elements in an unexpected way. Like an OC that uses a combination of magic spells (similar to Zelda) and acrobatic melee attacks (like Bayonetta). Also, consider their personality traits. If your OC is overly confident but also has a hidden vulnerability, it can make them more relatable and interesting to readers.
One idea could be an OC from a little - known game series getting invited to the Smash Bros world. They could start off as an underdog, struggling to adapt to the intense battles and different fighting styles. But as the story progresses, they learn from the veteran Smash characters and develop their own unique combat techniques, eventually becoming a respected fighter in the Smash universe.
To create a unique OC for Super Smash Bros Brawl fanfiction, consider their appearance. Make it distinct from the existing characters. Maybe they have a robotic body with living plants growing out of it if you want to combine nature and technology. Their personality is also crucial. Are they a cocky fighter who taunts a lot, or a more reserved and strategic one? Their backstory should tie into their personality and abilities. If they have a tragic past, it might explain why they fight so aggressively or defensively. And don't forget about their fighting style. It should be something that stands out, like a character who fights using only their feet or a character who uses psychic powers to control the stage elements.
An interesting plot for a Super Smash Bros Brawl OC fanfiction could involve an OC that is a master of disguise. This OC can transform into any of the existing Smash Bros characters, but with a twist. Their abilities are a bit different from the original characters. They use this power to create chaos during battles, making other characters suspect each other. As the story progresses, they start to have a change of heart and end up using their power for good, helping the Smash Bros community deal with an outside threat that none of the regular characters can handle alone.
A Cave Story quote in Smash Bros fanfiction could serve to establish a connection between the two universes. Maybe the quote is used as a sort of inspiration for a character's move set. Say a quote about quick movement is used to describe how a character has developed a new dash move in the Smash Bros world of the fanfic.