What are some interesting ideas for a Luigi crossover fanfiction?

One idea could be that Mario and Luigi get transported to a strange new world where the rules of their own world are all mixed up. They have to use their combined skills in a whole new way to find their way back home. For example, Luigi might have to be more brave and take the lead in some situations while Mario has to use his speed in different ways than he's used to.

One idea could be exploring Luigi's character growth. Maybe he discovers a new power within the mansion that helps him face his fears more bravely. Another idea is to create a backstory for the ghosts in the mansion, like how they came to be there and what their lives were like before. A third idea could be a crossover where characters from another game enter Luigi's Mansion, creating new and exciting adventures.

One idea could be that Luigi and Tails team up to solve a mystery in a strange, hybrid world that combines elements from their respective universes. They could use Tails' mechanical skills and Luigi's courage to face unknown challenges.

A plot could revolve around Luigi having to rescue all the Toads that have been scattered throughout the mansion in different forms - some are invisible, some are trapped in paintings. As he searches for them, he uncovers secrets about the mansion's original owner and their dark past.

Well, perhaps in the fanfiction, Luigi and Daisy decide to build a new home together. They might have different ideas about how the home should look, like Luigi wanting a more cozy and simple place while Daisy dreams of a grand and luxurious mansion. This could lead to some comical and also heartwarming moments as they try to compromise and create their dream home.

A really fun 'baby daisy and baby luigi fanfiction' could be set in a world of toys. They are toys themselves and they have to work together to escape from the clutches of an evil toy collector. They make friends with other toys along the way and use their unique skills, like baby Daisy's ability to find hidden paths and baby Luigi's courage, to overcome the challenges.

One idea could be that Luigi and the fem minions team up to save a magical kingdom. Luigi uses his skills like jumping and plumbing knowledge while the fem minions use their unique abilities and mischievousness to outwit the villains. Another could be a story where they all enter a cooking competition together, Luigi providing the human touch and the fem minions adding their own zany ingredients and cooking styles.

One idea could be that Female Bowser is initially set on causing chaos but Luigi manages to show her a different side of life. Maybe he takes her to a peaceful meadow and they have a heart - to - heart conversation. This could lead to her having a change of heart and helping Luigi protect the Mushroom Kingdom instead of attacking it.

One idea could be that Mario and Luigi find a magical lemon tree in a hidden part of the Mushroom Kingdom. The lemons from this tree have special powers that they have to figure out how to use to save the kingdom from a new villain. For example, the lemons might give them temporary super strength or the ability to fly. Another plot could involve Luigi accidentally getting lost in a lemon - themed dimension while trying to find a rare ingredient for a recipe. Mario then has to brave this strange new world filled with lemon - based creatures to rescue his brother.

A possible plot could be set in a parallel universe where Wendy is not a villain. She and Luigi meet at a grand Mushroom Kingdom festival. They both share a love for a particular type of mushroom - based food that is rare at the festival. As they search for this food together, they face various challenges like competing with other characters for the last piece, and through these shared experiences, they fall in love.