Scorpion from Mortal Kombat could be a very interesting character in this crossover. His hellish powers and his quest for revenge could put him at odds with some of the Naruto characters. His battles with Naruto or Sasuke would be intense, especially with his ability to teleport and use his kunai chain.
I think Naruto would be really interesting. His never - give - up attitude and his large array of jutsu would be very different from what the Mortal Kombat characters are used to. He could introduce the concept of chakra to them and his shadow clone jutsu could really throw them off in a fight.
Scorpion would be very interesting. Scorpion has a tragic backstory and his hellish powers are a great contrast to Kenshi's more earthly - based sword and telekinesis skills. Their interaction could be full of tension at first, as Scorpion is often distrustful, but they could learn from each other and become a powerful force. For example, Scorpion could teach Kenshi some of his stealthy combat moves, while Kenshi could show Scorpion how to better control his rage using telekinesis.
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.
It could be Arya Stark. In Game of Thrones, she has proven to be a highly skilled assassin. In a Mortal Kombat crossover, her ability to change faces and sneak up on her enemies would be a great advantage. She could use her Needle sword and her skills learned from the Faceless Men to take on opponents. And her list of names of those she wants to kill could easily be added to with Mortal Kombat villains.
Definitely Naruto and Scorpion. Naruto's energetic and acrobatic fighting style combined with Scorpion's hellish attacks would make for an amazing fight. Naruto could try to dodge Scorpion's chain spear while using his shadow clones to confuse him.
Hermione would be a great character in this fanfic. She's intelligent and resourceful. She could use her quick thinking to analyze her opponents' moves and come up with counter - strategies. And then there's Snape. His double - agent nature and his powerful potions and spells would add a lot of intrigue to the battles. He could use his potions to gain an edge over his opponents in the Mortal Kombat - like fights.
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.
I think Rock Lee would be really interesting. His extreme dedication to training and his unique fighting style would be a great contrast to the often chaotic and self - serving characters in the GTA world. He could run around the GTA streets, challenging the thugs to combat and trying to uphold his ninja code in a very different and morally ambiguous environment.
I think Kakashi would be a great choice. He's already a very versatile character. If he had Frozone's ice powers, he could combine it with his Lightning Blade technique. He could freeze enemies in place and then finish them off with his lightning - enhanced sword. His intelligence would also make him very creative in using these new powers.
One interesting plot point is the clash of different power systems. Naruto has chakra and his jutsus, while Mortal Kombat characters have their own unique fighting styles and special moves. For example, seeing how Naruto's shadow clone jutsu would work against Sub - Zero's ice powers is really cool.