One idea could be a story where Hanzo Hasashi and Kenshi team up to face a common enemy. They could start off as strangers, but as they fight side by side, they begin to understand and respect each other's skills and values. This could lead to a deep friendship or even a mentorship kind of relationship.
One common theme is the clash of their cultures. Hanzo is from a very different cultural background compared to Sonya. Their different values and ways of life often create interesting dynamics in the stories.
Yes, there are quite a few. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Hanzo Hasashi x Sonya' and you'll find a variety of stories, ranging from action - packed adventures where they team up against common enemies, to more character - exploration - based stories that delve into their complex relationship.
The first key element is their unique abilities. Hanzo Hasashi's fire - based attacks and his ninja skills, and Kenshi's telekinetic swordplay and his ability to sense things around him. You should show how these abilities interact when they are together. For example, Kenshi could use his senses to detect hidden enemies while Hanzo uses his stealth to flank them.
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.