Who could be the main antagonist in a Mario and Luigi crossover fanfiction?

Wario could also serve as an antagonist. He might be envious of Luigi's new married life and try to steal their treasures or disrupt their happiness. Maybe he spreads false rumors about Luigi in the Mushroom Kingdom just to create chaos in their lives.

Bowser could be the main antagonist. He might see Luigi's transformation as an opportunity to mess with Mario and the Mushroom Kingdom. He could try to use Luigi's new form to his advantage, perhaps by trying to make Luigi a spy or by using his new identity to cause chaos among the kingdom's residents.

Maybe a new character could be the main antagonist. A powerful and mysterious being that Luigi stumbles upon during his escape. This character might have some vendetta against the Mario brothers or just be generally evil and wants to stop Luigi's journey for its own malicious reasons.

Well, the main characters are obviously Mario and Luigi. They are the ones who usually drive the story forward in this kind of fanfiction. Sometimes, Princess Peach might also be involved. For example, she could be the one who asks Mario and Luigi to find some special lemons for a grand banquet she's planning. Yoshi could also make an appearance, maybe he has a taste for lemons too and joins Mario and Luigi on their lemon - related adventures.

Another possibility is that a group of Koopa minions could be the main antagonists. They might be under the orders of Bowser, but they have their own little schemes going on. They could target Mario - turned - girl because they think she'll be an easier target in her new form, but they are in for a big surprise when she shows her strength.

If it's a crossover with Final Fantasy, Cloud Strife could be a main character. He could bring his sword - fighting skills to the Mario Party world. His serious and brooding personality would contrast with the more light - hearted Mario characters, creating some interesting interactions during the story and mini - games.

If it's a crossover with Alice in Wonderland, the Queen of Hearts could be the main antagonist. The Queen might see Tinkerbell as an intruder and try to behead her. Tinkerbell would have to use her wits and magic to survive in the crazy world ruled by the Queen of Hearts.

Mario and Luigi are the main characters. Mario is the more well - known and heroic one, while Luigi is his sidekick but also has his own unique abilities.

In the Mario and Luigi life story, the two central characters are, of course, Mario and Luigi. Mario is known for his red cap and blue overalls. He is the one who usually takes the lead in their quests. Luigi, his younger brother, has a green cap and overalls. He may be a bit more hesitant at times but is a great help to Mario, especially when they need to work together to solve puzzles or defeat enemies.

The two main characters in 'Mario and Luigi: The Inside Story' are Mario and Luigi. Mario is the more well - known and heroic of the two, often taking the lead in their adventures. Luigi, his brother, is also very important. He has his own unique abilities that complement Mario's, and together they form a great team to face the challenges in the game.