The 'Rune King Thor Graphic Novel' often features Thor's journey to a new level of power. He undertakes a quest that involves learning ancient runes and magic. This newfound knowledge and power put him in a position to face threats that are far beyond the scope of his usual battles.
Thor is the main character, of course. As he transforms into the Rune King, his character goes through a major evolution. Odin also plays an important role, as his past actions and knowledge are often intertwined with Thor's journey. Loki, as always, is also there, causing his usual mischief and sometimes being an unexpected ally or foe.
Rune King Thor can be found in certain issues and story arcs of the Thor comic series. Usually, when there are major power-ups or epic battles involving Thor, there's a chance he'll take on the form of Rune King Thor.
In a kratos vs naruto fanfic battle, Naruto might have a chance if he uses his strategic thinking. He could use his shadow clones to surround Kratos and then attack from all sides. But Kratos is no pushover. His experience in combat is vast. He has fought against opponents with all kinds of powers. If he manages to break through Naruto's clones and get to the real Naruto, it could be over. However, Naruto also has his sage mode which gives him enhanced strength and perception. So it's a very tough call.
One idea could be a battle in a neutral dimension. Kratos, with his brute strength and god - slaying weapons, faces Naruto's ninjutsu and his ability to summon powerful creatures. Another idea is that they are forced to team up against a common enemy that threatens both their worlds. They start off clashing due to their different fighting styles and beliefs but gradually learn to work together.
Well, it really depends on how the fanfiction is written. If the writer decides to give Percy some new powers or boost his existing ones, he could stand a chance against Kratos. However, Kratos is a force to be reckoned with. He's faced the most terrifying foes in his own universe. Percy is used to fighting monsters in the world of Greek mythology, but Kratos has fought gods on their own turf. So generally, Kratos has more of an advantage.
I'm not sure specifically as there could be various 'Rune King' novels. It might be about a character who is a king in a world where runes play a significant role, perhaps in magic, power, or governance within the story's fictional setting.
One interesting plot twist could be that Percy discovers a way to nullify Kratos' god - given powers. Maybe he finds an ancient artifact during the fight that has the ability to do so. Another could be that Kratos, instead of seeing Percy as an enemy, realizes they have a common goal against a greater evil in the fanfiction world and they end up teaming up.
Since I don't know the exact 'Rune King Novel', I can't say for sure. But usually, there would be the Rune King himself as a main character. There might also be a mentor figure who helps him understand the runes.