I'm not entirely sure which specific 'Joker graphic novel' you mean. But generally, the Joker's kills are often brutal and random. He might kill for fun, to prove a point, or just to create chaos.
I'm not entirely sure specifically what a 'naruto kills fanfic' is. It could be a fan - made story where Naruto kills someone in a non - canonical or creative scenario. It might be a very specific plot within the Naruto fanfiction community that focuses on Naruto taking a life, perhaps in a dark or alternate universe story.
In a 'batman kills fanfic', it's a deviation from the norm. Fanfics often play with established characters in new ways. Here, Batman killing might be used to create a shock factor or to tell a story that challenges the status quo. It could be set in an alternate universe where the rules are different. It might also explore the psychological impact on Batman himself, as killing would go against everything he stands for in the regular DC Comics world. It's a creative exploration by fans who want to see what would happen if Batman took a more lethal approach.
Their interaction would be tense at first. Young Kratos, full of energy and unbridled aggression, might see old Kratos as a threat or an obstacle. Old Kratos, on the other hand, would be more reserved and cautious. But as they start to communicate, they would find common ground in their shared past and their connection to their family.
Kratos might win. He has fought and defeated many powerful gods in his own world. He is not only physically strong but also very strategic. He could analyze the Hulk's movements and find his weaknesses. The Hulk, while strong, is more of a brute force fighter. Kratos could use his Blades of Chaos to keep the Hulk at a distance and then strike when the opportunity arises. Also, Kratos has faced opponents much larger than him before and has always found a way to win.
One possibility is that it could focus on a mentoring aspect. Old Kratos, with all his wisdom and experience, could guide young Kratos. Maybe he'd show him different combat techniques or how to better control his rage. It could also be a story of self - discovery for young Kratos as he sees his future self and realizes the potential path he could take.