Lucy's celestial magic could be a very unique addition to Phantom Lord. They might not have anyone with such magic before. So, she could use her keys to gain an advantage in battles or for other strategic purposes within the guild. For instance, she could use her Aquarius key to control water sources during a fight or her Taurus key for brute strength when needed.
Her magic would likely cause some jealousy or intrigue within Phantom Lord. Some members might see her as a threat because of her powerful and rare magic. Others might try to learn from her or steal her keys. Lucy would have to be careful and constantly on guard to protect her magic and herself. Also, she could potentially combine her celestial magic with some of the Phantom Lord's existing magic types in unexpected ways to create new and powerful spells.
Well, it could be about Lucy initially being a spy for Fairy Tail in the Phantom Lord guild. Maybe she discovers some dark secrets within Phantom Lord that could either help Fairy Tail or put her in great danger. She might also form unexpected friendships with some of the Phantom Lord members while still remaining loyal to her Fairy Tail comrades at heart.
Well, one possibility could be that Natsu is forced to join Phantom Lord due to some dark magic or a powerful enemy's scheme. He might initially resist but then find some hidden good in the guild members.
Naruto would fit in as a source of high energy and enthusiasm. His loud and friendly personality would contrast with some of the more reserved Avengers. He would be the one to break the ice and get everyone motivated.
If Naruto joined the Spriggan 12, his powers would be quite a unique addition. Naruto has his chakra and the Nine - Tails' power. His shadow clones could be used for various strategic purposes. For example, he could send a large number of clones to gather information or create distractions while the real Naruto attacks. Also, his Rasengan and other jutsu could be very effective in combat against the enemies of the Spriggan 12. His ability to sense negative emotions might also help in detecting threats before they become obvious.
Naruto's speed and agility from his ninja training would be very useful in the Hellsing world. He could easily dodge attacks from vampires and other creatures. His ability to use chakra to enhance his physical strength means he could hold his own in close - combat situations. For example, he could punch a vampire hard enough to send it flying. Also, his summoning jutsu could bring in some interesting allies to help the Hellsing team in their battles.
Batman would fit in by being the ultimate strategist. The Avengers sometimes jump into action without a fully thought - out plan. Batman's meticulous planning would force them to be more organized. He could also provide a more grounded perspective. Many of the Avengers have superpowers and deal with large - scale threats from outer space or magic realms. Batman, coming from the streets of Gotham, would remind them of the importance of protecting the everyday people.
The magic could be used as a secret weapon. For instance, Hermione could use the invisibility cloak to sneak up on enemies or use the levitation charm to disarm foes from a distance.
Well, Naruto has some amazing abilities. His Sage Mode gives him enhanced strength, speed, and sensory perception. If he were to join the Espada, this would make him a formidable opponent. His shadow clones could be used to confuse the Espada in battle. And his Rasengan, especially if he combines it with his other techniques, could be a real game - changer. Also, his ability to quickly learn new techniques might allow him to adapt some of the Espada - related powers to his own fighting style.
Naruto's powers would be very unique in Mermaid Heel. His chakra, which is different from magic, could offer new ways of combat. For example, his ability to run up walls and across water using chakra control could be a great asset in battles where Mermaid Heel mages might be limited in their mobility.
She would be an interesting addition. Her calm and regal nature might balance out some of the more impulsive Avengers. For instance, she could calm down Hulk when he's about to rage.