Spiderman and Erza would make for a strong pairing. Erza is a very powerful and disciplined mage. Spiderman could be in awe of her combat skills and leadership. They could fight side - side against powerful enemies, with Spiderman using his webs and agility and Erza with her various armors and weapons.
Definitely Spiderman and Natsu. Natsu's brash and fiery personality would contrast with Spiderman's more responsible and cautious nature. They could have some great banter while fighting side by side.
Yugi and Natsu would be an interesting pairing. Yugi is calm and strategic, while Natsu is impulsive and powerful. They could balance each other out. Yugi could use his intelligence to plan their adventures, while Natsu could use his fire - based magic to fight off enemies. Another interesting pair could be Erza and Kaiba. Erza is a strong and disciplined warrior, and Kaiba is a proud and powerful Duelist. They could have some epic battles of wills and skills.
Natsu and Lucy are quite popular pairings in Fairy Tail Mate Fanfiction. Their relationship in the original series already has a lot of chemistry, and in the fanfictions, it can be explored even further. Another popular one is Gray and Juvia. Juvia's obsessive love for Gray in the original series makes it ripe for expansion in the mate - themed fanfictions.
Natsu and Ziva would make an interesting pairing. Natsu's hot - headedness and powerful fire magic could contrast well with Ziva's cool and efficient combat skills. They could learn from each other in terms of fighting styles and also develop a friendship based on mutual respect.
A pairing between Sakura and Erza would be great. Erza is a strong and disciplined warrior in Fairy Tail, and Sakura has her own strength and tenacity. They could train together and learn from each other's combat styles. Maybe they would compete in friendly sparring matches, which would not only improve their skills but also strengthen their friendship in the process.
Lucy and Eevee could be an interesting pair. Lucy is kind - hearted and Eevee is a very adaptable and cute Pokemon. Lucy could use her celestial keys to help Eevee evolve into different forms depending on the situation they are in. For example, if they need to cross a large body of water, she could help Eevee evolve into Vaporeon.
Wanda Maximoff and Juvia would be a fascinating pairing. Wanda's powerful magic and Juvia's water - based magic could create some really unique and powerful combinations. Also, their different personalities - Wanda's more brooding and Juvia's more love - struck - would make for some interesting interactions.
Gray and Weiss could also make a great pair. Gray with his ice - make magic and Weiss with her ice - based semblance could have some really cool interactions. They could compare and contrast their ice powers, and perhaps even combine them in some creative ways during battles. Plus, their personalities are quite different which would lead to some interesting character development moments.
I think Naruto and Lucy would be really interesting. Naruto's brash and determined nature combined with Lucy's more level - headed and strategic thinking could lead to some great interactions. Also, Naruto might be fascinated by Lucy's celestial spirits.
Goku and Natsu would be an interesting pairing. Natsu is all about passion and brute strength in his use of fire magic, and Goku has his Saiyan power and love for a good fight. They could have some epic battles together, like sparring to see who's stronger, and also team up to take on tough enemies. They both have a bit of a reckless streak too.