In this crossover fanfiction, the Hulk's strength could be used to help the Loud family in a big way. For example, there could be a natural disaster about to hit Royal Woods, like a huge flood or an earthquake. The Hulk, with his superhuman strength, could hold back the floodwaters or stop the shaking ground. Meanwhile, the Loud kids could be helping the townspeople evacuate. It would be a story of how two different universes come together to save a town.
Another possibility is that one of the Loud kids, say Lincoln, has a hidden ability that is similar to the Hulk's. When he gets really angry, he turns into a mini - Hulk - like form. The real Hulk could come to Royal Woods to train Lincoln on how to control his new power. The other Loud sisters would be both amused and worried about Lincoln's new transformation, and there would be a lot of humorous and heart - warming moments as the family adjusts to this new situation.
The plot could involve the Hulk being shrunk down to the size of the Loud House family. He would then have to live with them and adapt to their chaotic household. The Loud kids would be fascinated by his strength and the Hulk would learn about family values from the Louds. There could be comical scenes where the Hulk tries to fit in, like sitting on the tiny furniture or trying to eat normal - sized food.
One idea could be that the Loud family somehow gets transported to Gotham City. Lincoln could befriend Robin and they team up to solve a mystery that involves both Gotham and Royal Woods' villains. Maybe the Joker has a plan that involves stealing a special item from Royal Woods, and the Louds have to work with Batman to stop him.
One cool plot idea could be the Loud family getting transported into the Kingdom Hearts universe. Lincoln could team up with Sora to fight the Heartless. Maybe the sisters would each have a unique role, like Luna using her music skills to soothe some of the more aggressive enemies. Another idea is that the Keyblade could choose one of the Loud siblings as its new wielder, leading to a whole adventure of them learning to use it and save both their world and the Kingdom Hearts worlds.
A cool plot for 'the loud house crossover fanfiction' might involve a crossover with 'My Little Pony'. The ponies could come to Royal Woods, and the Loud sisters could be fascinated by their magic and cuteness. Lincoln might have to figure out how to get the ponies back to Equestria while also dealing with his sisters' excitement. Or perhaps the Loud family travels to Equestria and has to adapt to a world ruled by ponies.
To write a great Loud House x Batman crossover fanfiction, focus on the interactions. Let the differences between the two groups create interesting dialogue and situations. The Louds' humorous and family - centered dynamic can contrast with Batman's solitary and serious nature. Also, don't be afraid to introduce new elements or twists. Maybe there's a secret connection between one of the Louds and a character from Batman's universe that gets revealed during the story. And always proofread and edit your work to make sure it flows well.
One idea could be that Spongebob and Patrick end up in the Loud House world. They could be really confused by all the human stuff and the big family. Maybe they try to make a Krabby Patty in the Loud House kitchen but use the wrong ingredients and chaos ensues.
One idea could be that the misfortunes from 'No Such Luck' somehow cross over into an alternate universe in the crossover. For example, Lincoln's bad luck could start affecting the other characters from the crossover world in strange ways, like causing their gadgets to malfunction.
One idea could be a crossover with another popular animated show. For example, the characters from 'Loud House' could end up in a different universe where they have to use their unique skills from 'No Such Luck' to survive. Maybe they meet characters who have similar family dynamics but different challenges.
One idea could be that the Loud siblings discover they have magical abilities and are sent to Hogwarts. Lincoln could be sorted into Gryffindor for his courage in dealing with his large family. Another could be that a wizard from the Harry Potter world visits Royal Woods and gets involved in the chaos of the Loud family. Maybe they help the family solve a mystery using magic.
One idea could be Naruto visiting Royal Woods. He could meet Lincoln and they could learn from each other. Naruto might teach Lincoln some ninja skills like tree climbing, while Lincoln could show Naruto how to deal with a large family. Another idea is that some of the Loud sisters get involved in a ninja - style tournament in the Naruto universe. They use their unique personalities and skills to compete.