Mark Grayson isn't Asian. The creators of the comics have established his ethnicity as something other than Asian. This is a well-defined aspect of the character's portrayal.
Mark Grayson isn't Asian in the comics. This aspect of his character has been consistently portrayed throughout the various comic storylines and depictions. There's no indication of him having Asian ethnicity.
Popular Mark Grayson fanfictions might explore his origin story from a different perspective. What if certain events in his past happened differently? This could lead to a completely different path for his character. There are also fanfictions that place him in crossovers with different fictional worlds, which can be really exciting for fans who like to see different universes collide.
In my opinion, it's really hard to say who would win. Jason has his Roman powers which are quite formidable, like his ability to control the winds. Percy, on the other hand, has his water - based powers which are extremely powerful especially in the right environment. In a fanfiction, it could really go either way depending on how the author wants to write it. Maybe they could end up not really fighting but joining forces against a common enemy.
One great female Mark Grayson fanfiction could be 'The Girl Next to Mark'. It explores a unique relationship where a female character becomes an important part of Mark's life. Another could be 'Mark and Her', which delves into how a female's presence affects Mark's superhero journey. There's also 'A Female's Perspective on Mark Grayson' that offers a different take on the character from a female point of view.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can search specifically for female Mark Grayson fanfictions using the search bar. Just type in relevant keywords like 'female' and 'Mark Grayson' and you'll likely find some great reads.