Rosalie and Anck - Su - Namun would be an interesting pairing too. Rosalie is a very strong - willed vampire, and Anck - Su - Namun is a powerful figure from the mummy's story. They could have a sort of rivalry or, in an unexpected turn, find common ground. Rosalie might be jealous of Anck - Su - Namun's beauty and power in her own time, but they could also end up working together if there was a greater threat, like a more powerful mummy or an ancient evil that was awakened due to the crossover of their two worlds.
A really interesting pairing could be Edward from Twilight and Evy from 'The Mummy'. Edward has his vampire abilities and is very protective, while Evy is smart and brave. They could work together to solve some mystery related to both their worlds. Maybe Edward could use his super speed to help Evy escape from some mummy - related danger, and Evy could use her knowledge of ancient history to help Edward understand more about the mummy's origin.
I think Detective Stabler and Brock would make an interesting pairing. Stabler is tough and has a no - nonsense attitude. Brock is knowledgeable about Pokemon and very nurturing. He could teach Stabler about the Pokemon world while Stabler could protect Brock during their investigation into a crime that involves both the SVU world and the Pokemon world, like a smuggling ring that is trading illegal Pokemon and drugs.
Gascoigne from Bloodborne and Jon Snow would make for an interesting duo. Gascoigne is a fierce hunter, and Jon Snow is a great warrior. They could fight side by side against the White Walkers. Gascoigne's experience in hunting monstrous creatures could be invaluable in the fight against the undead, and Jon Snow's leadership skills could help in coordinating their efforts.
A pairing between Bella from Twilight and Will from Sky High could be really interesting. Bella is used to the world of vampires and werewolves, and Will is a leader - type at Sky High. Their personalities are quite different. Bella is more introverted and brooding, while Will is confident and heroic. They could learn a lot from each other, and their relationship could develop as they face challenges together in the crossover world.
Another good pairing could be Jacob and Thor. Jacob's shape - shifting ability and his connection to nature could be something that Thor respects. They could bond over their physical strength and their loyalty to their respective groups. And Thor could introduce Jacob to the world of Asgardian magic and technology.
Shepard and Master Chief could be an interesting pairing. Shepard is a very diplomatic and charismatic leader in the Mass Effect universe, while Master Chief is a stoic and highly skilled soldier in the UNSC. Their different leadership styles could either clash or complement each other. They could learn from each other's combat and decision - making skills.
A crossover with James Bond could be great. Having a St Trinians girl as a Bond - girl - like character, but with her own unique St Trinians twist. She could outwit the villains in ways Bond never expected.
Ichigo Kurosaki would be an interesting crossover. Since they are both from the same universe, but have different power levels and fighting styles. The contrast between Ichigo's more impulsive and emotional approach and Genryusai Yamamoto's experienced and stoic nature would create great story moments.
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.
Twilight Sparkle and Hermione would make an interesting pairing. Both are highly intelligent and love to study magic. They could have long discussions about different spells, magical theories, and how magic works in their respective worlds. Another good pairing could be Rainbow Dash and Harry Potter. Rainbow Dash is brave and fast, just like Harry, and they could team up to face some sort of danger, like a dark wizard who has found a way to enter Equestria.
A really interesting pairing could be Emma Swan from Once Upon a Time and Spencer Reid from Criminal Minds. Emma is a strong - willed and independent woman who has had to fight for herself and those she loves. Reid is highly intelligent but also has a bit of an innocent side. They could balance each other out well. Emma could teach Reid about having more confidence in his physical abilities, while Reid could introduce Emma to more intellectual concepts. They could work together to solve a mystery that combines the magic of Emma's world and the criminal profiling of Reid's world.