Some of them might be offended. If the fanfiction portrays them in a way that goes against their self - perceived grandeur or if it misrepresents their myths and legends. For example, if a fanfiction makes Zeus look like a bumbling fool instead of the powerful king of the gods, he might not be too happy about it. However, others might see it as a form of flattery that mortals are so interested in their tales that they create their own versions.
A confident character like Percy might be more likely to laugh off inaccuracies in the fanfiction. He has a good sense of humor about himself, so he'd probably find some of the wilder interpretations of his adventures entertaining. Whereas a more serious character like Grover might be more critical. He might analyze the fanfiction from a more practical standpoint, thinking about how it could affect the real world or the way others perceive their quests.
I think Shanks would have an interesting reaction. He has known Luffy since he was a kid. Seeing Luffy reach Gear 5, he would probably be proud but also a bit cautious. He might think about how far Luffy has come and also wonder what challenges this new power will bring for Luffy and the world at large.
She grabs my hat could be a simple yet interesting story. Maybe she grabs it because she wants to play a joke on me. She might put it on her head and make a funny face, and we end up laughing.
Well, it could be a story about a girl who suddenly grabs someone's book. Maybe she's in a hurry and mistakes it for her own. It might lead to an interesting encounter, like an apology and then a new friendship starting from that little incident.
Luffy would probably be super excited. He's always been on this big adventure, and meeting his dad would be like a new milestone. He might jump up and down and start asking a million questions right away, like what his dad has been doing all this time and if he has any cool stories from his own adventures.
One possible'mom grabs balls stories' could be in a sports context. For example, a mom at a kids' soccer game quickly grabs the balls that are scattered around the field after the game to help the coach clean up. It's a simple act of being helpful and efficient.
One possible fanfiction could be about Sasuke using his Susanoo to save Sakura from a dangerous enemy. In this scenario, Sasuke, seeing Sakura in peril, quickly activates his Susanoo. The powerful, spectral form of the Susanoo reaches out with its massive hand and grabs Sakura, pulling her to safety. This moment could be a turning point in their relationship, with Sakura realizing anew how much Sasuke still cares for her, despite their past differences.
One common theme is protection. When Percy grabs Annabeth, it's often in a situation where he's trying to protect her from harm, like from a monster or some other danger in their mythological world.