If Percy Jackson becomes a god in a crossover fanfiction, his character would experience a significant transformation. He has always been a hero who fought for the underdog. But as a god, he might have to make difficult decisions that could go against his old principles. His view of right and wrong could become more nuanced. He would also have to deal with the envy and fear of those around him. His mortality - which was a big part of his identity - would be gone, and he'd have to redefine himself in the context of immortality. His sense of time would change, and he might start seeing things from a much longer - term perspective. All these changes would make his character much more complex and different from the Percy we knew as a demigod.
He might become more war - like. Norse gods are often associated with battle, so Percy could lose some of his more laid - back Greek side.
His sense of humor might change. He could become more wry and god - like in his jokes. Also, he might be more decisive, as a god has to make big decisions quickly. However, his love for his friends and family would still be there, just expressed in a different way perhaps, more like a distant protector.
His sense of humor might change. While Percy had a very down - to - earth and sarcastic humor as a mortal, as a god, he might develop a more refined and sometimes cutting sense of humor. He could use it to put other gods in their place or to make a point during a council meeting. Also, he would likely become more confident, bordering on arrogance at times. His new powers and status would give him a boost in self - assurance, but his friends from his mortal days would probably be the ones to keep him in check and remind him not to get too full of himself.
His sense of humor might change. While he was always quick - witted as a demigod, as a god, his humor could become more refined or perhaps more sarcastic in a way that only the other gods would understand. He'd be around different company, and that would influence how he expresses himself. Also, he could become more confident, bordering on arrogant, as he has so much power at his disposal now. But at the same time, his core values of loyalty and protecting the weak might still remain, just expressed in different ways.
His confidence would likely soar. As a god, he'd know he has more power and capabilities. So he might be more assertive in his actions and decisions.
His character might become more aloof. As a primordial god, he would be far removed from the normal world of demigods. He'd likely have a different perspective on things like friendship and loyalty. For example, he might not be as quick to jump into a fight for his friends as he used to be, because his new status would bring a different set of responsibilities.
He'd probably be more morally strict. In the original Percy Jackson stories, he has a more fluid sense of right and wrong based on Greek mythology. But if he were the son of the Christian God, he'd likely adhere more to the Ten Commandments type of moral code. For example, he might be less likely to use deception in his battles.
He would likely become more assertive. As a god, he has more power and responsibility, so he can't be as laid - back as he was before. He might also develop a more primal side, influenced by the wolf nature, like being more instinctive in his decision - making.
If Percy becomes a werewolf in fanfiction, his social life would be turned upside down. His friends at Camp Half - Blood might be hesitant to be around him, fearing his new, more unpredictable nature. He might be drawn to other werewolves or creatures of the night, which could introduce him to a whole new set of allies and enemies. Also, his training as a demigod would need to be adjusted to account for his werewolf abilities, like learning to fight in his new form without losing control.
Percy's personality would likely shift in several ways. He'd be more cautious in his actions as his decisions would have far - reaching consequences. His sense of humor might change too. Instead of the light - hearted quips he used to make, he might use more sarcasm or dry humor befitting a god. And his loyalty, which was always a big part of his character, might be tested as he has to balance his new divine duties with his relationships with his old friends. He may become more calculating in how he shows his loyalty, making sure it doesn't conflict with his new role as a god.