Well, obviously Luigi and Daisy are the main characters. Luigi, Mario's timid but kind - hearted brother, and Daisy, the feisty princess from Sarasaland. They are at the center of the story in this fanfiction.
One interesting plotline could be Luigi and Daisy teaming up to solve a mystery in the Mushroom Kingdom. Maybe there's a strange disappearance of power - ups, and they use their unique skills to figure it out.
Naruto's shadow clone jutsu could be used in really creative ways when combined with Meliodas' combat style. For example, the clones could surround an enemy while Meliodas attacks from the front, confusing the foe. Also, Naruto's rasengan could potentially be enhanced with Meliodas' demonic energy, creating a more powerful attack.
Carrot's moon form in One Piece gives her enhanced strength and speed. If combined with Naruto's Rasengan, they could create a super - powerful attack. Imagine Carrot in her moon form, spinning like a tornado while Naruto channels his chakra into a Rasengan in the center of that tornado - like motion. It would be a devastating combination.
In these crossovers, the female Percy Jackson's connection to the gods can be a huge factor. Her ability to communicate with them might be used to gain an advantage in the wizarding world. For instance, if there's a powerful dark magic threat, she could call upon the gods for help. Meanwhile, Harry Potter's knowledge of defensive magic can be used to protect her when she's in a vulnerable position due to her demigod status. Their combined abilities often lead to unique and exciting storylines. They can use their different powers to explore new areas, like using Percy's ability to breathe underwater along with a spell to make an underwater lair safe for both of them.
Lucy from Fairy Tail has her celestial spirit magic. She could summon spirits to assist characters from Seven Deadly Sins in battle. Maybe a spirit could enhance Ban's ability to steal life force, making him even more powerful in combat. And the characters from Seven Deadly Sins could teach the Fairy Tail mages some of their combat skills, like how to better use their physical strength in combination with magic.
Mario would definitely be a main character. Since Luigi is his brother, he would be the one most concerned about Luigi's transformation and would do everything he could to help him. Princess Peach could also be a main character. She might offer her castle as a safe place for baby Luigi and use her resources to find a solution. Toad could be there too, helping Mario with taking care of Luigi and providing useful information about the kingdom that could lead to reversing the spell.
Their relationship could develop through shared interests. For example, if they both have an interest in exploring the more mysterious parts of the Mushroom Kingdom. They could start going on adventures together, and as they face challenges like tricky terrains or new enemies, they rely on each other and grow closer.
Luigi comics are funny for several reasons. The art style might be exaggerated and visually amusing. The storylines could be full of slapstick comedy and witty one-liners. Plus, Luigi's own quirks and misadventures make them a laugh riot.