I think a pairing between Klein and Togusa could be fascinating. Klein's more laid - back nature compared to Togusa's by - the - book style could lead to some interesting interactions. And they could both bring different skills from their respective worlds when facing challenges in a crossover situation.
The Doom Slayer and Ruby. Ruby is young and full of hope, always looking for adventure. The Doom Slayer is a stoic, battle - hardened warrior. Their interaction would be really interesting. Ruby could be in awe of his strength and weapons, and the Doom Slayer might see a bit of his own unwavering will in Ruby.
Sinon from Ggo could also be very interesting. If she were to enter Sao, her sniper skills might translate in unexpected ways. She could be paired with characters from Sao and learn new combat techniques while also teaching them about the precision of long - range attacks.
I think Naruto and Kirito would be an interesting pair. Naruto is all about his exuberant and determined personality, always believing in his strength and the power of friendship. Kirito, on the other hand, is more of a lone wolf type at first but also has a strong sense of justice. Their meeting could lead to some great character development for both. Naruto could teach Kirito about the value of relying on others more, and Kirito could show Naruto some advanced combat strategies that he has learned in SAO.
One idea could be that the characters from SAO find themselves in the world of Ghost in the Shell. They have to adapt to the high - tech environment where cybernetic enhancements are common. Kirito could use his sword - fighting skills in a new context against cybernetic foes.
I think a pairing between Ben and Tali would be really cool. Tali is a brilliant engineer, and Ben's Omnitrix is a high - tech device. She could help him understand and maybe even upgrade it, while he could protect her with his alien powers during their adventures.
A really interesting character pairing could be Spiderman and Miss Martian. Miss Martian has her telepathic and shape - shifting abilities. She could help Spiderman get into places undetected by using her powers to create illusions or read the minds of enemies. Spiderman, in turn, could teach her about his concept of 'great power and great responsibility' and how to be a more street - smart hero.
Rick and Tony Stark would be a really interesting pairing. They are both super - intelligent inventors. Rick's off - the - wall and often unethical scientific methods would clash with Stark's more morally - guided approach. It would be fascinating to see them argue over the best way to build a device or solve a problem.
Fat Amy and Emmett would be a hilarious pairing. Fat Amy's over - the - top and fearless personality combined with Emmett's big - hearted and strong - willed nature. They could get into all sorts of comical situations. Maybe they start a side - project within the a cappella group or in the vampire world. Fat Amy could make Emmett laugh like no one else, and Emmett could protect Fat Amy from any threats, whether it's from jealous vampires or rival a cappella groups.
I think Rose and Klaus would be an interesting pairing. Rose is a tough and feisty guardian from Vampire Academy, and Klaus is a powerful and complex original vampire. Their interactions would be full of sparks, as they both have strong personalities and a lot of power. They could either be at odds with each other or end up having an unexpected alliance.
Kakyoin and Loki Warframe would make a fascinating pair. Kakyoin is very intelligent and strategic with his Hierophant Green stand. Loki, on the other hand, is all about stealth and deception. They could combine their skills to infiltrate enemy bases in the crossover. Kakyoin could use Hierophant Green to scout ahead while Loki keeps them hidden from detection.