A cool plot could involve Akuma from Street Fighter accidentally being transported to the Mortal Kombat realm. There, he's seen as a new threat, and Sub - Zero decides to take him on. But during their fight, they realize that there are greater forces at work trying to start a war between the two realms. So instead of fighting each other, they join forces, along with other fighters like Ken and Johnny Cage, to stop the real enemy that wants to see both worlds destroyed.
Title: 'The Clash of Titans: MK vs Street Fighter'. In this fanfiction, Ryu from Street Fighter finds himself in the Mortal Kombat realm. He's shocked by the brutal nature of the battles there. He meets Scorpion, and at first, they are hostile. But as they realize they both fight for justice in their own ways, they decide to team up against a common enemy, Shang Tsung, who has plans to invade both their worlds. They combine their fighting styles, Ryu's Hadoken mixing with Scorpion's Spear, creating a new and powerful attack to defeat Shang Tsung.
Perhaps there could be a story where the dark forces in Mortal Kombat are trying to corrupt the pure - hearted characters in Street Fighter. Akuma might be a target for this corruption. The Mortal Kombat villains could offer him more power in exchange for his loyalty. The other Street Fighter characters would then have to try and save Akuma from this dark influence, and they might seek help from some of the more morally ambiguous Mortal Kombat characters.
It could be Akuma. His Satsui no Hado gives him incredible power and his fighting skills are top - notch. In a crossover, he could easily adapt to the Mortal Kombat's more brutal fighting style and use his dark powers to overpower many opponents.
Perhaps Kenshi enters the Mortal Kombat world during a tournament. He is drawn to the power and chaos of the tournament. He decides to participate not only to test his skills but also to find a way back home. Along the way, he meets Kitana and they form an unlikely alliance. Kenshi helps Kitana with his strategic mind and combat skills, while she teaches him about the politics and power dynamics of the Mortal Kombat world.
A great plot point would be the search for a common enemy. Suppose there is a powerful being or force that is threatening both the Street Fighter and Mortal Kombat universes. This would force characters from both sides to come together. For instance, if M. Bison somehow got his hands on some Mortal Kombat magic or technology that made him even more powerful and started to invade both worlds. The Street Fighter characters would have to team up with Mortal Kombat warriors like Raiden and Kitana. Also, the idea of characters learning new fighting techniques from each other is exciting. Imagine Juri learning Scorpion's teleportation move and using it in a creative way against her Street Fighter foes.
It's really hard to say for sure. Shao Kahn from Mortal Kombat is extremely powerful with his brute strength and magical abilities. But then you have characters like M. Bison from Street Fighter who has powerful psychic powers. If we consider a crossover, it might depend on the rules of the world they are in. In a world more based on Mortal Kombat's rules, Shao Kahn might have the edge, but in a more Street Fighter - like setting, M. Bison could be more dominant.
Well, one possibility could be that Naruto characters are transported into the Mortal Kombat universe. Naruto, with his Rasengan, could face off against Sub - Zero's ice powers. Maybe they have to fight in Mortal Kombat tournaments to find a way back to their own world. It would be interesting to see how Naruto's ninja skills stack up against Mortal Kombat's brutal fighting styles.
One possible plot could be that the Akatsuki from Naruto are hired by a powerful and mysterious figure in the Street Fighter world to disrupt a major martial arts tournament. Naruto and his friends, along with some Street Fighter characters like Ryu and Ken, have to team up to stop the Akatsuki's evil plans. They face challenges like learning each other's fighting styles and dealing with the Akatsuki's unique abilities.
One idea could be a crossover with Street Fighter. Picture Ryu facing off against Scorpion in a battle of fire and ice. Another could be a Mortal Kombat and DC Comics crossover, where Superman has to deal with the brutality of Mortal Kombat fighters. Or perhaps a crossover with the Castlevania universe, where the dark and gothic elements blend with Mortal Kombat's gore.
One possible plot could be that Asura finds himself in the Street Fighter universe due to some mysterious rift. He then gets involved in the various battles and rivalries. Maybe he initially clashes with Ryu, thinking he is a threat, but later they realize they have a common enemy that is causing chaos in both their worlds.