A cool plot for a Fairy Tail Mard Geer fanfiction could be that Mard Geer gets trapped in a time loop. Every time he tries to carry out his evil plans, something resets and he has to start all over again. He slowly starts to question his own motives and actions as he experiences the same events repeatedly. Or, there could be a story where Mard Geer's magic is somehow transferred to a Fairy Tail member, and they have to deal with the dark and powerful magic while Mard Geer is left powerless and has to figure out how to get it back without being killed by his former allies.
One interesting plot idea could be exploring Mard Geer's past before he became a major antagonist in Fairy Tail. Maybe he had a relationship that was torn apart by the dark forces he later embraced. Another could be a what - if scenario where Mard Geer is redeemed and has to face the consequences of his past actions among the Fairy Tail guild members. A third idea is a fanfiction set in an alternate universe where Mard Geer is a hero instead of a villain, fighting against an even greater evil that threatens the world of Fairy Tail.
For a Fairy Tail Mard Geer fanfiction, Mirajane could be an excellent character to pair with him. Mirajane has her own dark past and her demon powers which could relate to Mard Geer in some ways. Their interactions could be full of mystery and tension. Laxus is another one. Laxus' brash and powerful personality would clash with Mard Geer's, creating a story full of action and power struggles. Additionally, Cana could be paired with Mard Geer. Cana's laid - back but also cunning nature could play off well against Mard Geer's more serious and evil demeanor.
The OC's character can develop through conflict with Mard Geer. For instance, if Mard Geer attacks the OC's hometown in the fanfiction, it could fuel the OC's determination to become stronger and seek revenge. This would shape the OC into a more resilient and vengeful character.
In fanfiction, the relationship between Mard Geer and an OC can be quite diverse. It could be a relationship of enmity, where the OC stands against Mard Geer's evil plans in the Fairy Tail universe. Maybe the OC is a mage with unique powers that directly oppose Mard Geer's dark magic.
One idea could be a new character arriving at Fairy Hills and having to adapt to the unique living situation. They could face challenges like getting along with the different personalities of the Fairy Tail mages living there.
Another plot could involve Bardock having to adapt to the magic - based society of Fairy Tail. He might initially struggle with understanding how magic works, but then discovers a way to combine his Saiyan power with the magic there. For example, he could learn to use ki - based attacks in harmony with Fairy Tail's elemental magics. This would create a unique fighting style that surprises both his allies and enemies.
One idea could be a crossover adventure where characters from Fairy Tail and Negima team up to fight a common, powerful enemy. For example, they might face a dark wizard who has the ability to steal magic from both worlds.
One idea could be that the main couple from Fairy Tail goes on a honeymoon to a magical island. There, they discover a hidden ancient magic that they have to protect from villains who also find out about it. Another plot could involve them facing relationship challenges during the honeymoon, like misunderstandings due to magic gone wrong. For example, a spell makes one of them forget parts of their relationship, and they have to work through it to rekindle their love.
In a 'Fairy Tail WW2 Fanfiction', a possible plot could be that the guild discovers a hidden magical dimension that is somehow connected to the events of WW2. They enter this dimension to try and stop a dark force that is influencing the war from the shadows. Some of the characters could form alliances with real - life military personnel who are open - minded enough to accept their help. This would lead to interesting interactions between the magical and non - magical worlds during the war.
One idea could be exploring how the next generation of Fairy Tail wizards handle a new dark guild threat. They might have to combine the old and new magic techniques they've learned.
One idea could be that Luffy joins the Fairy Tail guild and his rubber powers amaze everyone. He might participate in a guild - wide competition and use his unique abilities to win in unexpected ways. For example, stretching to reach far - off targets or bouncing around the arena to dodge attacks.