One common theme is the exploration of their relationship in different Mortal Kombat universes. Writers often imagine how they would interact given their different allegiances in the game. For example, Sub Zero is from the Lin Kuei while Mileena has her own complex backstory with Shao Kahn.
One common theme could be redemption. Mileena has done some rather cruel things in the Mortal Kombat lore. Sub - Zero, being a more noble character, could be the catalyst for her redemption. He might see the good in her that others don't and help her change for the better.
You can start by looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a large collection of fanfictions, and you can simply search for 'Sub Zero x Mileena' in the search bar. There are often filters to help you sort by popularity, rating, etc.
A Mileena x Sub - Zero fanfic could be about a lot of things. It might be a story of an unlikely alliance between them. For example, they could team up to fight a greater evil in the Mortal Kombat universe. Maybe there's a prophecy that only their combined powers can defeat a new, powerful enemy.
One great Sub Zero x Reader fanfiction is 'Frostbound Love'. It has a really interesting plot where the reader character is a healer who stumbles upon an injured Sub Zero. The story beautifully builds their relationship as they face various challenges together. Another one is 'Sub Zero's Secret Admirer' which focuses more on the shy beginnings of their relationship. It's full of cute moments and the way the author describes Sub Zero's character is very accurate.
One common theme is friendship. They are often shown as comrades in the Mortal Kombat universe, so many fanfictions explore their deep bond of friendship and how they support each other in battles and in the face of challenges.
A good Sub Zero x Reader fanfiction often has a well - developed relationship. It should show how the two characters interact, grow closer, and face challenges together. For example, if there's a story where the reader character helps Sub Zero overcome his inner demons, it makes the relationship more meaningful. Also, accurate portrayal of Sub Zero's personality traits like his stoicism, his loyalty to his clan, and his fighting skills is important.
One common theme is loyalty. Since they are often associated in the original context, fanfictions usually highlight how they are loyal to each other, whether it's in battle or in more personal situations.
One possibility could be that Naruto is transported to the Mortal Kombat universe and through some magical or technological means, he takes on the powers and identity of Sub - Zero. Maybe he has to adapt to the new combat styles and the brutal nature of the Mortal Kombat world while still retaining some of his Naruto - like traits such as his determination and never - give - up attitude.
Yes, there are likely fanfictions out there with the concept of 'Naruto is Sub Zero'. You can start by checking popular fanfiction websites like FanFiction.net or Archive of Our Own. They have a vast collection of fan - created works and you might find some interesting crossovers with this premise.