The plot of such fanfiction might revolve around a tournament. Imagine the Predator being invited or lured into the Mortal Kombat tournament. The other Mortal Kombat fighters would initially be confused by this new and strange opponent. But as the battles progress, they would learn to adapt to the Predator's hunting tactics. This could lead to some great character development as they face this extraterrestrial threat.
In Mortal Kombat 11 crossover fanfiction, some of the most popular crossover characters are from other fighting games like Street Fighter. For example, Ryu. His unique fighting style and the contrast between his more disciplined and honorable approach compared to Mortal Kombat's often brutal and underhanded tactics make for interesting fanfic scenarios. Another popular one could be characters from DC Comics if there's a crossover in that regard. Superman or Batman can bring a whole new dynamic to the Mortal Kombat universe with their superpowers and detective skills respectively.
Another interesting crossover could be with a superhero universe, say the Marvel universe. Picture Scorpion facing off against Spider - Man. Scorpion's hellish powers and acrobatic fighting style would make for an intense battle against the web - slinger. He could be there because he's been summoned by some dark magic that is affecting both worlds.
One great storyline could be a Mortal Kombat 11 and Resident Evil crossover. Imagine the Mortal Kombat warriors having to fight through a zombie - infested Outworld. They would have to use their combat skills not only against the undead but also against any Resident Evil villains that might be lurking. Another interesting one is a crossover with Star Wars. The Jedi and Sith powers would be a fascinating contrast to the Mortal Kombat magic and combat. For example, a lightsaber duel between a Mortal Kombat character and a Jedi Knight.
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.
Ermac can be characterized as a powerful and mysterious figure. His telekinetic powers would make him stand out in any crossover. He would be seen as a force to be reckoned with, and his stoic nature would add to his allure. In a crossover, he might be the silent observer at first, trying to understand the new world he's in.
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.
First, know Scorpion's character well. His backstory of revenge and his loyalty to the Shirai Ryu clan are important aspects to keep in mind. Then, when choosing the crossover element, make sure it complements his character. For example, if it's a crossover with a fantasy world, you can play with the idea of Scorpion's hellish powers in a world full of magic.
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 possible plot could involve Ermac's past being somehow linked to the crossover world. He discovers that an ancient evil in that world was involved in his creation. So, he goes on a quest to find out the truth and put an end to this evil once and for all. He might face many challenges along the way, like distrust from the locals of the crossover world who see him as a threat.