Natsu is definitely one of the key characters. His strength and determination are always crucial for Fairy Tail. He's likely to be in the thick of the action, taking on tough opponents head - on.
Erza is another key figure. With her vast array of armors and combat skills, she can lead the charge and inspire the other members. She could be the one to come up with strategic plans during the games and execute them with precision, making her an essential part of Fairy Tail's victory.
Gray would also play an important role. His ice - make magic can be a great counter to many opponents' attacks. He might have some cool (pun intended) moments where he freezes the attacks of the enemy mages and then counter - attacks with his own unique skills.
One of the most exciting moments could be when Natsu pulls off an extremely powerful fire - based attack that no one expected. It would show his growth as a mage.
In this fanfiction, perhaps the Grand Magic Games are altered due to the presence of Naruto characters. For example, there could be new events that test both ninja skills and magic. Sasuke could use his Sharingan to counter some of the illusions created by Fairy Tail mages. And characters like Erza would be intrigued by the different fighting styles of the Naruto universe, leading to some epic battles and exchanges of techniques.
Natsu Dragneel is very important. His strength and determination are key to the guild's future. Lucy Heartfilia is also important as she continues to grow as a mage. Gray Fullbuster is another important character with his unique ice - magic skills.
They would interact in very interesting ways. Naruto might be curious about the magic of Fairy Tail and try to learn some spells. The Fairy Tail characters, on the other hand, would be amazed by Naruto's ninja abilities. For example, Gray might be interested in Naruto's ability to walk on walls.
One idea could be Natsu getting a new, powerful form during the Grand Magic Games. This form could be a result of some ancient magic he discovers. He then uses this form to defeat a really tough opponent and surprises everyone, including his guildmates.
One of the key events is the aftermath of the intense battles during the Grand Magic Games. The characters start to rebuild and strengthen their guild. There are also new relationships and rivalries that form as a result of the games.
Happy could be an unexpected hero. Usually seen as a sidekick, in a fanfiction, he could suddenly discover a new form of magic. Maybe he unlocks a powerful transformation that gives him the ability to take on powerful opponents. He could use his speed and newfound strength to turn the tide in the games.
A fanfic of this nature would likely explore the cultural differences between the two universes as well. The Grand Magic Games are not just about battles but also about representing one's guild. Naruto, coming from a ninja village, would have to understand the concept of a guild. He might bring in his own sense of loyalty and teamwork from the ninja world. And the Fairy Tail members would be intrigued by his strange powers. There could be humorous moments as they try to figure out how his jutsu works compared to their magic. And in the battles, the clash of Naruto's chakra - based attacks and the Fairy Tail mages' elemental magic would make for some really intense and visually stunning scenes.
In Naruto, Naruto himself would be a strong contender. His vast chakra reserves and his ability to use multiple powerful jutsus like the Rasengan and the Sage Mode would give him an edge. From Fairy Tail, Erza would be a top contender. With her Re - Equip magic, she can quickly change into different armors with various abilities, making her very adaptable in different challenges.
They would bring new powers. Naruto's Rasengan could be a very powerful attack in the games. It could be compared to some of the big - hitting magic spells in Fairy Tail.