Joker (from the Suicide Squad concept) and Orochimaru would be an extremely interesting pairing. Both are devious and manipulative villains. They could form an alliance to take over both the Naruto world and the Suicide Squad's world. Their plans would be full of twists and turns, and it would be up to the heroes like Naruto and some of the more morally - good members of the Suicide Squad to stop them.
Harley Quinn and Sakura could be a great match. They are both strong female characters with very different personalities. Harley's wild and unpredictable nature could either drive Sakura crazy or inspire her to be more free - spirited. And Sakura could teach Harley some self - defense skills beyond just her acrobatics and baseball bat - swinging.
Naruto and Tsukune would be an interesting pair. Naruto's energetic and determined nature combined with Tsukune's kind heart and his own growth as a character in the Rosario world could lead to some great interactions. They could learn from each other's ways of dealing with challenges and protecting their friends.
Deadpool, without a doubt. His crazy antics, fourth - wall - breaking, and unpredictable nature would add a whole new level of chaos to the already volatile Suicide Squad. He would constantly be making jokes, getting into fights with the other members just for the fun of it, and finding unique ways to solve problems that the more traditional Squad members wouldn't think of.
Sasuke and Dimitri would be a great pairing. Both are strong, brooding characters with a lot of depth. They could have some intense sparring sessions where they exchange fighting techniques. Dimitri could introduce Sasuke to the world of vampires and the complex politics involved, while Sasuke could share his knowledge of ninja jutsu and the shinobi way. Their similarities and differences would make for a very engaging relationship in the fanfiction.
Sasuke and Grant Ward would be an interesting pair. Sasuke has his dark past and his thirst for power, and Ward also has a complex and somewhat dark past. They could either become rivals, constantly trying to outdo each other in terms of combat skills and power, or they could find some common ground and work together in a strange way, like using Sasuke's Sharingan and Ward's combat training to take on a powerful enemy.
One interesting pairing could be Edward and Deadshot. Edward's ability to read minds could be really useful in helping Deadshot with his aiming. Deadshot, on the other hand, could teach Edward about human combat techniques that the vampires might not be familiar with.
Naruto and Kaneki would be a really interesting pair. Naruto is all about hope and never giving up, while Kaneki has this internal struggle between his human and ghoul sides. Naruto could help Kaneki embrace his duality more positively and Kaneki could show Naruto the darker side of a world where survival is not as straightforward as in the ninja world. Their different powers, Naruto's chakra and jutsu and Kaneki's kagune, would also make for some exciting battle scenes and strategic combinations.
Sasuke and Papi could be a fun pairing. Sasuke's brooding and serious demeanor would be quite different from Papi's carefree and somewhat ditzy nature. Papi's ability to fly could be useful in Sasuke's missions, and Sasuke could teach Papi some self - defense ninja moves. Their interactions would be full of comical moments as well as some deeper exchanges as Sasuke tries to understand Papi's simple - minded yet kind - hearted way of thinking.
I think Naruto and Lucifer would be an interesting pair. Naruto's unwavering belief in good and his never - give - up attitude would contrast sharply with Lucifer's more cynical and self - centered nature. Their interactions could be full of tension and also moments of mutual understanding as they learn from each other.
Another interesting pairing could be Ben and Captain America. Cap's leadership and moral compass could influence Ben, while Ben's diverse powers could be a great asset to Cap in battle. They could be in a situation where they have to fight against a mind - controlled army, and Ben's aliens like Big Chill could freeze the enemies in place while Cap gives strategic commands.
Lex Luthor and Michael from Roswell would make for an exciting duo. Lex is always looking for power and knowledge, and Michael is a bit of a rebel alien. Lex might see Michael as a way to gain access to the alien technology from Roswell. Michael, on the other hand, might be suspicious of Lex but also intrigued by his resources. Their interactions would be full of tension and power plays.