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.
Hephaestus was the god of fire and blacksmiths in Greek mythology. Aphrodite was the goddess of love and beauty. Hephaestus was married to Aphrodite, but Aphrodite was unfaithful to him. She had an affair with Ares, the god of war. Hephaestus found out about their affair and trapped them in a net. He then brought them before the other gods to shame them.
Well, Hephaestus' origin is quite interesting. He was born to Zeus and Hera. But his mother, Hera, didn't like him because of his physical imperfection. She tossed him out of Olympus. After that, Hephaestus ended up on Lemnos. There, he became a very skilled craftsman, creating all sorts of amazing things. His story also involves his return to Olympus later, where he was recognized for his great skills.
The relationship could develop as a slow - burning one. Initially, Hephaestus is just trying to get closer to Hera to prove himself. He starts by presenting her with small gifts that he has made. Hera is initially dismissive but as she sees the effort and the artistry behind these gifts, she starts to soften. Over time, they engage in more conversations, sharing their thoughts and feelings. Eventually, this leads to a more intimate and complex relationship where they support and care for each other in ways they never thought possible.
I think Tyson, Percy's cyclops half - brother, would be a good character. His strength and loyalty would be assets in any situation. Also, Nico di Angelo could be in the fanfic. His control over the dead could provide an interesting dynamic, especially if they are exploring some dark or ancient places related to Hephaestus' past works. And of course, Clarisse La Rue. Her combat skills and fierce personality would add some drama and action to the story.
It can be developed through communication. For example, Hephaestus could finally open up to Aphrodite about his insecurities regarding their relationship. Aphrodite, in turn, could be honest about her own feelings and desires. This exchange of honest words could break down the barriers between them and lead to a closer bond.
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.