She could influence him morally. For example, if Nero has been on a bit of a morally ambiguous path, his mother might set him straight, reminding him of the values of his family. She could also give him courage, like a boost of confidence to face his enemies.
His mother might influence Nero's power development. Maybe she has some special ability that she passes on to Nero, or she gives him tips on how to better control his existing powers. This could make Nero a more formidable character in the fanfiction world.
On an emotional level, her presence could heal some of Nero's inner wounds. If he has had a difficult past or has been feeling alone, meeting his mother could fill that emotional void. She could make him feel loved and supported, which in turn might change his attitude towards life and his relationships with other characters in the fanfiction.
It provides a rich source of inspiration. Legends had many unique species, planets, and technologies that can be incorporated into canon - based fanfiction. This can add depth and variety to the stories.
She's sometimes portrayed as a mysterious figure. Writers often use her to create intrigue and depth in Nero's character arc. For instance, she could be a lost love of Vergil or Dante's, which would add a whole new dynamic to the relationships in the story.
It might become strained. They could start avoiding each other for a while until they resolve the issue. In some cases, Trish might be less likely to help Nero in his quests or battles if she's really pissed off.
Lit can influence him by shaping his view of the world. Fiction often contains themes and ideas that can make him think about different aspects of life. For instance, if he reads a dystopian novel, it might make him more aware of social and political issues.
In Devil May Cry fanfiction, Nero's mother is often a subject of speculation and creative exploration. Some fanfictions might depict her as a powerful demon herself, which could explain Nero's extraordinary abilities. This would add an interesting layer to Nero's backstory, as he might be on a journey to discover more about his mother's heritage and how it relates to his own powers.
His past makes him very vigilant. Harry has seen the worst of the wizarding world, so he'll be on high alert for any signs of danger around his kids. For example, he might be extra careful about who they interact with, fearing that dark wizards could target his family.
They would probably be very surprised at first. After all, they might not have expected to ever meet Luffy's mother. Then they would be excited to learn more about Luffy's past from her.
His family would probably be overjoyed. After all, they might have thought they'd lost him forever. There would be hugs and tears, and a flood of questions about his life and what he's been through.
He could meet historical figures like Julius Caesar. Nero might have a conversation with him and learn about ancient Roman politics.
It can become more open - minded. They start to see the potential for different storylines around the BTS members. For example, if they were only used to seeing the members in official music videos and shows, fanfiction shows them in various new situations.