Another concept is a love story involving an MK11 guest character. They could fall in love with a character from the Mortal Kombat world. This love could be a forbidden one, as their two worlds have different values and rules. Their relationship would face many challenges, both from the outside world and from within themselves as they struggle with their feelings and loyalties.
Create an engaging plot. Don't just rely on the fighting aspect of Mortal Kombat. Maybe there's a mystery that the guest character needs to solve, like a conspiracy within the MK11 tournament. You can also add some twists and turns to keep the readers interested.
To write a compelling Injustice 2 fanfiction with guest characters, start by choosing the right guest character. If you pick someone like the Ninja Turtles, you can play on their camaraderie. Have them form an alliance with some of the Injustice 2 heroes who share their values. Then, build a plot around their mission. Maybe they're after a powerful artifact that a villain in Injustice 2 also wants. You also need to give the guest characters growth. Let them learn from the experiences in the Injustice 2 universe and change in some way. For example, they could become more cynical about the state of the world in Injustice 2.
Scorpion and Sub - Zero are main characters. Scorpion is known for his hellish powers and thirst for revenge at times. Sub - Zero has his ice - based abilities. Liu Kang also plays a significant role, being a powerful fighter in the Mortal Kombat universe.
I think that the Terminator could be a very popular guest character for Injustice 2 fanfiction. His unrelenting pursuit and advanced technology would pose a great threat or a great asset in the Injustice 2 story. Additionally, characters like Ash Williams from Evil Dead could add some humor and badassery to the fanfiction. His chainsaw - hand and one - liners would be a fun addition. And then there's the Alien. The idea of the Alien stalking the characters in the Injustice 2 world would be terrifying and make for some great horror - inspired fanfiction.
Well, the canon status of MK comics isn't straightforward. It might be canon within certain story arcs or universes, but not across the board. Different interpretations and continuities can come into play.
Obviously, MK and Mandrake are the main characters. MK is the one who gets kidnapped, so he is likely to be the protagonist in the sense that the story will probably focus on his struggle and how he deals with the situation. Mandrake, on the other hand, is the kidnapper, so he is the antagonist. He is the one creating the conflict in the story.